Rockwell Automation 2706-P42_P43_P44_P72_P74_P92_P94 InView Marquee Message Display User Manual User Manual
Page 13
Publication 2706-UM016D-EN-P - March 2006
Install InView Marquee Message Display 1-5
TB1 can be used for incoming RS-232 or RS-485 serial
connection. They cannot be connected at the same time. RS-485
is recommended to reduce undesirable electrical interference.
7. P1 can be used for incoming RS-232 only, although it is optional
and not recommended.
P1 is intended for RS-232 application downloads and RS-485
terminating resistor connection.
See publication 2706-IN007 for more information on RS-485
termination.
8. To maintain NEMA compliance and to prevent EMI emissions,
install hole plugs in any open conduit holes in the power supply
enclosure.
TB1
Incoming serial
wires
8
7
6
5
4
3
2
1
TIP
Be sure to place the wires so they are not caught by
screws when replacing the power supply cover, and
also so they do not interfere with fan operation.
TB1 - RS-232
Pin
Pin Name
Pin
Pin Name
1.
GND
5.
NC
2.
NC
6.
NC
3.
RS-232 TX
7.
NC
4.
RS-232 RX
8.
NC
TB1 - RS-485
Pin
Pin Name
Pin
Pin Name
1.
NC
5.
RS-485(+)
2.
NC
6.
RS-485(-)
3.
NC
7.
NC
4.
NC
8.
SHIELD
P1
Incoming
serial wires
TIP
Be sure to place the wires so they are not caught by
screws when replacing the power supply cover, and
also so they do not interfere with fan operation.