Rockwell Automation 2706-P42_P43_P44_P72_P74_P92_P94 InView Marquee Message Display User Manual - Manual (Page 40)

Publication 2706-UM016D-EN-P - March 2006
2-2 InView System Connectivity
These displays have a single channel UART and therefore can only
have one of the three communication options connected at a time.
• RJ-12
• RS-232 terminal block connections
• RS-485 terminal block connections
2706-P22 Display
This display operates at 18 to 30V dc. It has three communication
ports. These are the RJ-12, DB-9, and a six position terminal block
ports. The RJ-12 port is used primarily for downloading messages to
the display via the 2706-PCABLE1 download cable. The DB-9 port is
used for RS-232 communications and the signals are in parallel with
the RJ-12 port. Therefore, only one of the ports may be connected at a
time. The six position terminal block is used for RS-485
communications. The 2706-P22R display has a two-channel UART.
This means that one of the RS-232 ports and the RS-485 port can be
connected at the same time.
2706-P22R Display Communication Connections
TB1 - Full
Pin Pin Name Pin Pin Name
1. GND 5. GND RS-485(+)
2. +5V 5. +5V RS-485(-)
3. RS-232 TX 6. RS-232 TX NC
4. RS-232 RX 7. RS-232 RX SHIELD
TB1
Incoming serial
wires
8
7
6
5
4
3
2
1
TB1 Connections
1 2 3 4 5
6 7 8 9
RS-232
RS-485
1 - E-GND 2 - SHLD 3 - COMM 4 - CH A 5 - CH B 6 - TERM
RJ12
1 2 3 4 5 6
+5V NC TX RX NC GND
RS-232 Pin-out
1 - NC
2 - RX
3 - TX
4 - NC
5 - GND
6 - NC
7 - RTS
8 - CTS
9 - NC
RS-485 Pin-out
1 - E-GND
2 - SHLD
3 - COMM
4 - CH A
5 - CH B
6 - TERM RJ11 Pin-out
1 - +5V
2 - NC
3 - TX
4 - RX
5 - NC
6 - GND