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FUNCTION OVERVIEW
20
4.2 Setting the Running Frequecy
The following table lists the functions which can be executed from the programmable logic controller in the CC-Link system:
Operation Mode
Control Location
Item
PU operation
External operation
CC-Link operation
Operation command
Disallowed
Disallowed
Allowed
Running frequency setting
Disallowed
Disallowed
Allowed
Monitoring
Allowed
Allowed
Allowed
Parameter write
Disallowed (*3)
Disallowed (*3)
Allowed (*3)
Parameter read
Allowed
Allowed
Allowed
Inverter reset
Disallowed
Disallowed
Allowed (*1)
Error reset at inverter fault
(RY1A)
Allowed (*1)
Allowed (*1)
Allowed (*1)
User program
Stop command (*2)
Disallowed
Disallowed
Allowed
Inverter reset terminal
Allowed
Allowed
Allowed
Operation command
Disallowed
Allowed
Allowed (*4)
Control circuit
terminal
Frequency setting
Disallowed
Allowed
Allowed (*4)
(
*
1) At occurrence of a communication error, the inverter cannot be reset from the computer. (For inverter reset, refer
to the inverter manual.)
(
*
2) As set in Pr. 75.
(
*
3) As set in Pr. 77.
Values can be written to Pr. 4 to Pr. 6, Pr. 22, Pr. 24 to Pr. 27, Pr. 52 to Pr. 56, Pr. 72, Pr. 232 to Pr. 239 during
operation.
(For full information, refer to the inverter manual.)
(
*
4) As set in Pr. 338 and Pr. 339
Note 1. The inverter goes into the external operation mode if it is reset from the PLC in the CC-Link operation mode.
The setting of "1" in Pr. 340 (link start mode) selects CC-Link operation mode.