Modbus MFU Option Card Installation Manual
2 of 64
Publication PUB091-004-00_0918
The Modbus card described in this manual has been designed to fully comply with Modbus
protocol specifications. This means that network biasing must be used somewhere on the
highway to ensure good communications. See Section 4.
The Modbus card described in this manual contains static-sensitive devices. Suitable
precautions, such as wearing an earthed anti-static wrist strap, should be taken before
handling the card. It should be kept in an anti-static bag or box while it is not fitted within an
actuator.
Note 1:
The Modbus Modules described in this manual are suitable for inclusion in Rotork
IQ3, SI
₃
, CVA (Only firmware version CVA1.14 or later), CMA and K-range actuators.
Note 2:
Although the same Modbus module is fitted to the different ranges of actuators, there
will be different numbers of valid inputs and outputs for each range, depending on the actuator
capabilities. For example, actuators not fitted with a battery cannot report Battery Low.
Note 3:
The information in this manual relates to the following Modbus module firmware
version: V0050 or later.
Note 4:
Throughout this manual the Modbus Module may simply be referred to as the module,
card or MFU (Modbus Field Unit
– the circuit board fitted to the actuator in the field).
Note 5:
Inputs are the status messages from the actuator and outputs are the command
messages to the actuator.
As we are continually developing our products their design is subject to change without notice.
©
The contents of this document are copyright and must not be reproduced without the written
permission of Rotork Controls Ltd.
The names Allen, Bluetooth, Modbus, Rotork and Torx are registered trademarks.
