Yokogawa JUXTA M Series Digital Limit Alarms MVTK - Manual (Page 39)

<3. PC Link Communication >
3-25
IM 77J04J11-01E 1st Edition : 2006.08.25-00
3.3.2 Communication with UT Link Module
Communication with FA-M3 is achieved by simply connecting the M Series to a UT
link module using the PC link communication protocol. Set the communication
conditions of the M Series identical to those of the UT link module.
FA-M3
Model of UT link module: F3LC51-2N
A maximum of 1200 m; up to 31 slave stations
The UT link module supports the following two types of communication modes and com-
mand communication, which allow you to communicate with FA-M3 without being aware of
it. For more information, see the optionally available "UT Link Module User's Manual (IM
34M6H25-01E)."
1. Automatic mode
This mode enables the instrument's fixed devices (those that cannot be specified by
the user) to be constantly refreshed by reading from them. The fixed devices are
D0001 to D0004. They are read-only areas and cannot be written into.
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 into them.
See Also
The devices mentioned here are D registers and I relays. For more information on D registers and I
relays, see Chapters 6 and 7.
3. Command communication
Command communication allows the user to communicate with instruments as and
when required.