View source for CDE7512 RS-232 Protocols

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|1=CDE7512_Introduction
|2=CDE7512_Remote_Control
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|5=CDE7512_General_Settings
|6=CDE7512_On-Screen_Display_Menu
|7=CDE7512_Embedded_Applications
|8=CDE7512_RS-232_Protocols
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</noinclude>
=RS-232=
This document describes the hardware interface spec and software protocols of RS-232 interface communication between ViewSonic LFD and PC or other control units with RS-232 protocol.

The protocol contains three command sections:
* Set-Function
* Get-Function
* Remote control pass-through mode
:<small>'''NOTE:''' Below, “PC” represents all the control units that can send or receive the RS-232 protocol command.</small>

==Description==
===RS-232 Hardware Specification===
ViewSonic LFD communication port on the rear side:
# Connector type: DSUB 9-Pin Male (female or 3.5 mm barrel connector)
# Use of crossover (null modem) cable for connection
# Pin Assignment:
{| class="wikitable" style="text-align:center; width:60%; background-color:#ffffff;"
|- 
! style="background-color:#c41230;" |   
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Pin #
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Signal
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Remark
|-
| style="font-weight:bold;" | Male DSUB 9-Pin (preferred)
| 1
| NC
| style="text-align:left;" | 
|-
| rowspan="4" style="text-align:center;" | <div class="res-img">[[File:Male_DSUB.png|180px]]</div>
| 2
| RXD
| Input to Display
|-
| 3
| TXD
| Output to Display
|-
| 4
| NC
| rowspan="5" | 
|-
| 5
| GND
|-
| style="font-weight:bold;" | Female DSUB 9-Pin
| 6
| NC
|-
| rowspan="4" style="font-weight:bold;" | <div class="res-img">[[File:Female_DSUB.png|180px]]</div>
| 7
| NC
|-
| 8
| NC
|-
| 9
| NC
| 
|-
| frame
| GND
| style="text-align:left;" | 
|}

{| class="wikitable" style="text-align:center; width:60%; background-color:#ffffff;" 
|- 
! style="background-color:#c41230;" | 
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Item
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Signal
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Remark
|-
| style="font-weight:bold;" | 3.5 mm barrel connector<br />(alternative for limited space)
| Tip
| TXD
| Output from Display
|-
| rowspan="2" style="text-align:center;" | <div class="res-img">[[File:IFP52_Barrel_Connector.jpg]]</div>
| Ring
| RXD
| Input to Display
|-
| Sleeve
| GND
| 
|}

===LAN Hardware Specification===
ViewSonic LFD communication port on the rear side:
# Connector type: 8P8C RJ45
# Pin assignment:
{| class="wikitable" style="text-align:center; width:60%; background-color:#ffffff;" 
|- 
! style="background-color:#c41230;" |   
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Pin #
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Signal
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Remark
|-
| rowspan="9" style="font-weight:bold;" | <div class="res-img">[[File:LAN_Spec.png]]</div>
| 1
| TX+
| Output from Display
|-
| 2
| TX-
| Output from Display
|-
| 3
| RX+
| Input to Display
|-
| 4
| BI_D3+
| For 1G case
|-
| 5
| BI_D3-
| For 1G case
|-
| 6
| RX-
| Input to Display
|-
| 7
| BI_D4+
| For 1G case
|-
| 8
| BI_D4-
| For 1G case
|-
| frame
| GND
| style="text-align:left;" | 
|}
'''RS-232 Communication Setting'''
* Baud Rate Select: 9600bps (fixed)
* Data bits: 8 bits (fixed)
* Parity: None (fixed)
* Stop Bits: 1(fixed)

'''LAN Communication Setting'''
* Type: Ethernet
* Protocol: TCP/IP
* Port: 5000 (fixed)
* WOL Port: 9 (fixed) for UDP
* Cross subnet: No
* Logon Credentials: No

'''Command Message Reference''' <br />
PC sends to LFD command packet followed by “CR”. Every time PC sends control command to Display, the Display shall respond as follows:
# If the message is received correctly it will send “+” (02Bh) followed by “CR” (00Dh)
# If the message is received incorrectly it will send “-” (02Dh) followed by “CR” (00Dh)

=Protocol=

==Set-Function Listing==
The PC can control the Display for specific actions. The Set-Function command allows you to control the Display behavior at a remote site through the RS-232 port. The Set-Function packet format consists of 9 bytes.

'''Set-Function Description:'''
{| style="font-weight:bold; text-align:center; background-color:transparent; width:60%;" border="1" 
|-
| Length
| style="font-weight:normal; text-align:left;" | Total Byte of Message excluding “CR”
|-
| LFD ID
| style="font-weight:normal; text-align:left;" | Identification for each of Display (01~98; default is 01)<br />ID “99” means to apply the set command for all connected displays. Under such circumstances, only ID#1 display has to reply.<br />The LFD ID can be set via the OSD menu for each Display.
|-
| Command Type
| style="font-weight:normal; text-align:left;" | Identify command type,<br />"s" (0x73h): Set Command<br />"+" (0x2Bh): Valid Command Reply<br />"-" (0x2Dh): Invalid Command Reply
|-
| Command
| style="font-weight:normal; text-align:left;" | Function command code: One byte ASCII code.
|-
| Value [1~3]
| style="font-weight:normal; text-align:left;" | Three bytes ASCII that defines the value.
|-
| CR
| style="font-weight:normal; text-align:left;" | 0x0D
|}

'''Set-Function Format'''
'''Send: (Command Type="s")'''
{| class="wikitable" style="text-align:center; width:60%; background-color:#ffffff;" 
|- 
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Name
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Length
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|ID
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Command Type
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Command
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Value1
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Value2
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Value3
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|CR
|-
| Byte Count
| 1 Byte
| 2 Byte
| 1 Byte
| 1 Byte
| 1 Byte
| 1 Byte
| 1 Byte
| 1 Byte
|-
| Bytes Order
| 1
| 2~3
| 4
| 5
| 6
| 7
| 8
| 9
|}

'''Reply: (Command Type="+" or "-")'''
{| class="wikitable" style="text-align:center; width:60%; background-color:#ffffff;" 
|- 
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Name
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Length
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|ID
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Command Type
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|CR
|-
| Byte Count
| 1 Byte
| 2 Byte
| 1 Byte
| 1 Byte
|-
| Bytes Order
| 1
| 2~3
| 4
| 5
|}

:<small>'''NOTE:''' When PC applies command to all displays (ID=99), only the #1 set needs to reply by the name of ID=1.</small>
<br />
<u>'''Example 1: Set Brightness as 76 for Display (#02) and this; command is valid.'''</u> <br />

'''Send (Hex Format)'''
{| class="wikitable" style="font-weight:bold; text-align:center;"
|- 
! style="background-color:#c41230; color:#ffffff;"|Name
! style="background-color:#c41230; color:#ffffff;"|Length
! style="background-color:#c41230; color:#ffffff;"|ID
! style="background-color:#c41230; color:#ffffff;"|Command Type
! style="background-color:#c41230; color:#ffffff;"|Command
! style="background-color:#c41230; color:#ffffff;"|Value1
! style="background-color:#c41230; color:#ffffff;"|Value2
! style="background-color:#c41230; color:#ffffff;"|Value3
! style="background-color:#c41230; color:#ffffff;"|CR
|- style="font-weight:normal;"
| Hex
| 0x38
| 0x30<br />0x32
| 0x73
| 0x24
| 0x30
| 0x37
| 0x36
| 0x0D
|}

'''Reply (Hex Format)'''
{| class="wikitable" style="font-weight:bold; text-align:center;" width="45%"
|- 
! style="background-color:#c41230; color:#ffffff;"|Name
! style="background-color:#c41230; color:#ffffff;"|Length
! style="background-color:#c41230; color:#ffffff;"|ID
! style="background-color:#c41230; color:#ffffff;"|Command Type
! style="background-color:#c41230; color:#ffffff;"|CR
|- style="font-weight:normal;"
| Hex
| 0x34
| 0x30<br />0x32
| 0x2B
| 0x0D
|}

<u>'''Example 2: Set Brightness as 75 for Display (#02) and this; command is NOT valid.'''</u> <br />

'''Send (Hex Format)'''
{| class="wikitable" style="font-weight:bold; text-align:center;"
|- 
! style="background-color:#c41230; color:#ffffff;"|Name
! style="background-color:#c41230; color:#ffffff;"|Length
! style="background-color:#c41230; color:#ffffff;"|ID
! style="background-color:#c41230; color:#ffffff;"|Command Type
! style="background-color:#c41230; color:#ffffff;"|Command
! style="background-color:#c41230; color:#ffffff;"|Value1
! style="background-color:#c41230; color:#ffffff;"|Value2
! style="background-color:#c41230; color:#ffffff;"|Value3
! style="background-color:#c41230; color:#ffffff;"|CR
|- style="font-weight:normal;"
| Hex
| 0x38
| 0x30<br />0x32
| 0x73
| 0x24
| 0x30
| 0x37
| 0x35
| 0x0D
|}

'''Reply (Hex Format)'''
{| class="wikitable" style="font-weight:bold; text-align:center;" width="45%"
|- 
! style="background-color:#c41230; color:#ffffff;"|Name
! style="background-color:#c41230; color:#ffffff;"|Length
! style="background-color:#c41230; color:#ffffff;"|ID
! style="background-color:#c41230; color:#ffffff;"|Command Type
! style="background-color:#c41230; color:#ffffff;"|CR
|- style="font-weight:normal;"
| Hex
| 0x34
| 0x30<br />0x32
| 0x2D
| 0x0D
|}

===Set-Function Table===
'''A. Basic Function'''
{| class="wikitable" width="45%" style="text-align:center;"
|- 
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"|Set Function
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"|Length
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"|ID
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"|Command
! colspan="2" style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;" | Command
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"| Value Range
! style="font-weight:bold; text-align:center; background-color:#c41230; color:#ffffff;"| Comments
|- 
| 
| 
| 
| Type (ASCII)
| style="text-align:left;" | Code<br />(ASCII)
| Code<br />(Hex)
| (Three ASCII bytes)
| 
|-
| Power On/Off<br />(Standby)
| 8
| 
| s
| !
| 21
| 000: STBY<br />001: ON
| 1. The Power-on via LAN control may works only under specific mode. To see display UG for details. *3.1.1<br />2. “WOL by MAC address” may available as alternative.*3.2.1
|-
| Input Select
| 8
| 
| s
| "
| 22
| 004: HDMI 1<br />014: HDMI 2<br />024: HDMI<br />006: VGA<br />007: Slot-in PC (OPS)<br />009: DP<br />019: Type-C<br />00A: Embedded/Main (Android)
| 1. No need for USB<br />2. For the case of two more same sources, the 2nd digital is used to indicate the extension.<br />3. The HEX of 00A is 30 30 41.
|-
| Brightness
| 8
| 
| s
| $
| 24
| 000 ~ 100<br />900: Bright down (-1)<br />901: Bright up (+1)<br />*3.1.1
| 
|-
| Backlight*3.2.0
| 8
| 
| A
| B
| 42
| 000~100
| 1. For Android platform whose main mode is controlled by backlight and the other sources are controlled by brightness.<br />2. Derived from Color calibration.<br />*3.2.0
|-
| Power Lock
| 8
| 
| s
| 4
| 34
| 000: Unlock<br />001: Lock
| *See note in details
|-
| Volume
| 8
| 
| s
| 5
| 35
| 000 ~ 100<br />900: Volume down(-1)<br />901:Volume up(+1)
| rowspan="2" | 
|-
| Mute
| 8
| 
| s
| 6
| 36
| 000: OFF<br />001: ON (mute)
|-
| Button Lock
| 8;
| 
| s
| 8
| 38
| 000: Unlock<br />0001: Lock
| *See note in details
|-
| Menu Lock
| 8
| 
| s
| >
| 3E
| 000: Unlock<br />001: Lock
| *See note in details
|-
| Number *3.1.1
| 8
| 
| s
| @
| 40
| 000~009
| rowspan="2" | 
|-
| Key Pad *3.1.1
| 8
| 
| s
| A
| 41
| 000: UP<br />001: DOWN<br />002: LEFT<br />003: RIGHT<br />004: ENTER<br />005: INPUT<br />006: MENU/(EXIT)<br />007: EXIT
|-
| Remote Control
| 8
| 
| s
| B
| 42
| 000: Disable<br />001: Enable<br />002: Pass through
| Disable: RCU will be no function<br />Enabled: RCU controls normally<br />Pass through: Display will bypass the RC code to connected device via the RS-232 port, but not react itself.
|-
| Restore Default
| 8
| 
| s
| ~
| 7E
| 000
| Recover to factory setting
|}

'''B. Optional Function'''
{| class="wikitable" style="text-align:center;" width="45%"
|- 
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Set Function
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Length
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|ID
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"|Command
! colspan="2" style="font-weight:bold; background-color:#c41230; color:#ffffff;"| Command
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"| Value Range
! style="font-weight:bold; background-color:#c41230; color:#ffffff;"| Comments
|-
| 
| 
| 
| Type (ASCII)
| style="text-align:left;" | Code<br />(ASCII)
| Code<br />(Hex)
| (Three ASCII bytes)
| 
|-
| Contrast
| 8
| 
| s
| #
| 23
| 000~100
| style="text-align:left;" | 
|-
| Sharpness
| 8
| 
| s
| %
| 25
| 000~100
| style="text-align:left;" | 
|-
| Color
| 8
| 
| s
| &
| 26
| 000~100
| style="text-align:left;" | 
|-
| Tint
| 8
| 
| s
| '
| 27
| 000~100
| 
|-
| Backlight On_Off
| 8
| 
| s
| (
| 29
| 000: Off<br />001: On
| 
|-
| Color Mode
| 8
| 
| s
| )
| 29
| 000: Normal<br />001: Warm<br />002: Cold<br />003: Personal
| 
|-
| Freeze On_Off
| 8
| 
| s
| .
| 2A
| 000: Off<br />001: On
| 
|-
| Bass
| 8
| 
| s
| .
| 2E
| 000~100
| 
|-
| Treble
| 8
| 
| s
| /
| 2F
| 000~100
| 
|-
| Balance
| 8
| 
| s
| 0
| 30
| 000~100
| 050 is central
|-
| Picture Size
| 8
| 
| s
| 1
| 31
| 000: FULL (16:9)<br />001: NORMAL (4:3)<br />002: REAL (1:1)<br />*3.1.0
| 
|-
| OSD language
| 8
| 
| s
| 2
| 32
| 000: English<br />001: French<br />002: Spanish
| Could be extended for more supported languages by model
|-
| Date: Year
| 8
| 
| s
| V
| 56
| Y17~Y99
| Last 2 digits<br />(20)17~(20)99
|-
| Date: Month
| 8
| 
| s
| V
| 56
| M01~M12
| 2 digits
|-
| Date: Day
| 8
| 
| s
| V
| 56
| D01~D31
| 2 digits
|-
| Time: Hour
| 8
| 
| s
| W
| 57
| H00~H23
| 24-hr format. 2 digits.
|-
| Time: Min
| 8
| 
| s
| W
| 57
| M00~M59
| 2 digits
|-
| Time: Sec
| 8
| 
| s
| W
| 57
| S00~S59
| 2 digits
|-
| Customized Hot Keys
| 8
| 
| s
| X
| 58
| 001~999<br />001: Open MVBA app
| 
|}

{{#seo:
|title=ViewSonic Commercial Display
|title_mode=append
|keywords=ViewSonic, ViewBoard, CDE12 Protocols, RS-232, RS232, CDE7512
|description=RS-232 Protocols for the CDE7512 Commercial Display.
}}

[[Category:CDE7512]]