Woodward MRM4, Manual

Page: 188 / 460

Communication Protocols
Part 1: Setting the TCP/IP Parameters
Call up »Device parameter/TCP/IP« at the HMI (panel) and set the following parameters:
•
TCP/IP address;
•
Subnetmask; and
•
Gateway.
Part 2: Configuration of the Devices
Call up »Device parameter/Modbus« and set the following communication parameters.
•
Setting a Unit Identifier is only necessary if a TCP network should be coupled to a RTU network.
•
If a different port than the default port 502 should be used please proceed as follows:
•
Choose “Private” within the TCP-Port-Configuration; and
•
Set the port-number.
•
Set the maximum accepted time of “no communication”. If this time has expired – without any
communication, the device concludes a failure within the master system.
•
Allow or disallow the blocking of SCADA commands.
Part 3: Hardware Connection
•
There is a RJ45 interface at the rear side of the device for the hardware connection to the control
system.
•
Establish the connection to the device by means of a proper Ethernet cable.
Direct Commands of the Modbus ®
Parameter Description Setting range Default Menu path
Res Diagn Cr All Modbus Diagnosis
Counters will be reset. inactive,
active
inactive [Operation
/Reset
/Counter]
Page 188 EN MRM4 01/11