Yokogawa PR300 Power and Energy Meter - Manual (Page 76)

<Toc> <Ind> <4. PC Link Communication Protocol>
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IM 77C01E01-10E
4.3 Communication with Higher-level Devices
Higher-level devices are those capable of using the PC link communication protocol.
4.3.1 Communication with FA-M3 (UT Link Module)
Communication with FA-M3 is achieved by simply connecting the PR300 to a UT link
module using the PC link communication protocol. Set the communication condi-
tions of the PR300 identical to those of the UT link module.
FA-M3
Model of UT link module: F3LC51-2N
RS-485 communication
Maximum communication distance: 1200 m
Maximum number of slave stations to be connected: 31
PLC
Figure 4.3 Communication with UT Link Module
The UT link module function has the following two modes, which allow you to communicate
with FA-M3 without being aware of it. For more information, see the optionally available
user's manual of UT Link Module (IM 34M6H25-01E).
1. Automatic mode
This mode enables the instruments' fixed devices (those that cannot be specified by
the user) to be constantly refreshed by reading from them. The fixed devices are
D0001 to D0022, and the read areas cannot be written to.
2. Manual mode
This mode enables the instrument's devices (those that can be specified by the user)
to be constantly refreshed by reading from and/or writing to them.
See Also
The devices mentioned here are D registers. For more information on D registers, see Chapter 7.