Mitsubishi Electric GOT2000 Series, Connection Manual

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11.5 Precautions
11 - 25
CC
-Link IE FIELD NETWOR
K CON
N
ECTION
11
■7.
When the output is required to be held at the data link failure
Set the GOT to hold the input from the data link faulty stations in the communication setting. Set "Input for Error
Station" to "Hold".
➠
11.3.2 Communication detail settings
■8.
Connection to RnSFCPU
The RnSFCPU takes 10 seconds or more to run.
If the GOT is started before the RnSFCPU runs, a system alarm occurs.
To prevent a system alarm from occurring, adjust the title display time in the [GOT Setup] dialog.
➠ GT Designer3 (GOT2000) Screen Design Manual
■9. Connecting one PLC with multiple GOT units
When multiple GOT units are simultaneously accessing one PLC, the GOT writing process (transient/cyclic) and
reading process (transient) may slow down.
This slow access can be remedied with the following countermeasures.
<Countermeasures>
(1) Improve response speed on PLC side
Insert a COM instruction on the PLC to increase the response speed. Note that caution is required as the scan time
will increase.
(2) Screen design using cyclic devices
Create the screen with cyclic devices instead of using transient devices.
(3) Split GOT connection destinations into several systems
Add a master/local unit on the PLC side, and split the GOT connection destinations into several systems.
Improve the current system configuration.
(Example of current system configuration)
With the following system configuration, access from the GOT is concentrated at one unit.
(Improvement measure)
(a) Add unit on PLC side
Add a unit on the PLC side to disperse the GOT access destinations.
GOT GOT GOT GOT GOT GOT
GOT access is concentrated at one unit
GOT GOT GOT GOT GOT GOT
Add station No. 2 to disperse the GOT access
Access to station No. 2 Access to station No. 1
station
No. 2 station
No. 1