Caution On Use Of Melsec-Q Series Plc; Restriction In Device Specification; Caution When The Got Is Connected To The Serial Communication Unit; Caution When Connecting To Q Multiple Cpu System - Mitsubishi Electric F920GOT-K Hardware Manual

GOT-F900 SERIES (CONNECTION)
11.5

Caution on Use of MELSEC-Q Series PLC

When using the GOT-F900 connected to the Q Series PLC, observe the following caution on use.
11.5.1

Restriction in device specification

Word specification of bit devices and bit specification of word devices are not supported in the GOT-
F900.
11.5.2

Caution when the GOT is connected to the serial communication unit

When the GOT is connected, the CH1 and the CH2 of the serial communication unit cannot be used at
the same time.
(The setting "CH1: dedicated protocol format 5, CH2: non-procedural protocol" is available.)
Accordingly, have in mind that connecting both GOT unit and peripheral equipment for the GPP function
or two GOT units to one serial communication unit is not allowed.
Personal computer
GOT-F900
However, a GOT unit (RS-232C) or a personal computer (USB port) can be connected to the QCPU
while the computer link unit has one GOT unit.
11.5.3

Caution when connecting to Q multiple CPU system

1) Restriction in Device Monitor Function of GOT-F900
The PLC number cannot be specified on the screens for device monitor or sampling in HPP mode on
the system screen. Hence, GOT-F900 monitors only the connected CPU.
When a GOT is connected to the serial communication unit, the GOT monitors only the control PLC.
2) Restriction in Monitored CPU
The GOT-F900 should be connected only when the system is configured with QCPU. If the system
includes a motion control or CPU of personal computer, GOT-F900 should not be connected
because monitoring cannot be performed properly even if it is connected to the QCPU.
CPU
Serial communication unit
CPU
Serial communication unit
QCPU
CPU of personal computer
Motion control
Connection of MELSEC-Q Series PLC 11
GOT-F900
Either
one
Personal computer
GOT-F900
GOT-F900
GOT-F900
11-14