Q19928 - 2711-NC21 and 2711-NC22 cables for the PanelView
Last Modified: 07/16/2002
Previously Released as #13911
The 2711-NC21 and NC22 cables are 9 pin to 8 pin mini-din cables designed originally to
connect a PV300 Keypad or a xxx5, xxx9 or xxx16 terminal directly to a ML1000, 1200 or
1500 processor.
They only differ by the length:
The NC21 is 16.4ft (5 meter)
The NC22 is 49 ft (15 meter)
The pinout of this cable is:
PV AIC+, ML1000
9 pin 8 pin (Rt. Angle)
DCD 1 -------- 5 DCD
TXD 2 -------- 4 RXD
RXD 3 -------- 7 TXD
GND 5 -------- 2 GND
4 ---|
6 ---|
RTS 7 -------- 3 RTS ; RTS/CTS are not crossed. They must be crossed when used with a
Belden network.
CTS 8 -------- 6 CTS
Problem:
The problem is when the NC21/NC22 is connected to an AIC+ and a Belden cable is also
connected. The handshaking pins are required in this setup and the handshaking pins not
crossed. They are required to be crossed for handshaking to occur with the Belden cable.
If Belden is not used, the handshaking pins are not required.
Alternatives:
Use a 1761-CBL-PM02 or a 2711-CBL-PM05 with a null modem adapter.
Or, add a 9 to 9 pin adapter to the NC21 cable with pins 7 and 8 crossed. But don't recross
pins 2 and 3, they are already crossed.
May 2002: New cables that correct the handshaking pins are available as Ser A Rev B.
Documentation
General Category: s EOI
Product(s): PanelView
Catalog #: 2711ND3
Series / Revision:
Subject
(Keyphrases):
Summary of
Technote
Information:
Documentation Technote: 2711-NC21 and 2711-NC22 cables for the PanelView Page 1 of 2
http://domino.automation.rockwell.com/applications/kb/RAKB.nsf/0/A4350EB6186504DF852... 6/29/2006
The new pinout of this cable is:
PV AIC+, ML1000
9 pin 8 pin (Rt. Angle)
DCD 1 -------- 5 DCD
TXD 2 -------- 4 RXD
RXD 3 -------- 7 TXD
GND 5 -------- 2 GND
4 ---|
6 ---|
RTS 7 -------- 6 CTS ; RTS/CTS are now crossed with a Ser A Rev B cable.
CTS 8 -------- 3 RTS