YOKOGAWA UPM100, Руководство пользователя

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IM 77C01H01-10EN
PC Link Communication
4
4 PC Link Communication
4.1 Overview
The use of PC link communication enables the UPM100 to communicate with a device
such as a PC, touch panel, or FA-M3(PLC)’s UT link module. Such a device can be used in
communication to read/write data from/to D registers or I relays, both of which are internal
registers of the UPM100.
Maximum overall cable length of 1200 m for a maximum of 31 slave stations
040101E.EPS
PLC
Model of UT link module
Figure 4-1 Example of Connection for PC Link Communication
Hereafter, PCs are generically called “higher-level devices.”
See Also
Chapters 6 and 7 for information on the D registers and I relays.
In PC link communication, a higher-level device identifies each UPM100 with a station
number of 1 to 99.
Note
• The UPM100 has data (D register) the unit of which is two words. When 2-word data need to
be written or read, writing or reading operations must be performed for the 2- word data at the
same time.
• Even if data written to the D register is out of the effective range, a normal response is returned.
The part of the written data within the effective range becomes effective on the UPM100 when
the equivalent setting change status is written for that data.
Chapter 4 PC Link Communication