Hardware reference guide

Intelligent/Special Purpose
376
35013379 11/2011
Modbus Connectors
The MSX modules are equipped with a 9-pin, RS-232C connector that supports
Modicon’s proprietary Modbus communication protocol. The following is the Modbus
port pinout connections for 9-pin and 25-pin connections.
The following figure shows the MSX Modbus port pinouts to 9-pin connectors (AS-
W956-xxx).
The following figure shows the MSX Modbus port pinouts for 25-pin connectors (AS-
W955-xxx).
Servo Connector
The MSX is also equipped with a 50-pin servo connector for communication with
feedback devices.
NOTE: The tables below show the 50-pin servo connector signals. Pin numbers
correspond to both the MSB and MSC modules. When the signals differ from each
other, they are shown separated by a slash (i.e., Pin Number 34, MSB/MSC).