Cc-Link Ie Field Network Function Setting (Fr-A800-Gf) - Mitsubishi Electric FR-A800 Series Instruction Manual

• A signal loss detection is made when the setting is any of "0.1 s to 999.8 s". In order to enable the signal loss detection,
data must be sent by the master at an interval equal to or less than the time set for the communication check. (The inverter
makes a communication check (clearing of communication check counter) regardless of the station number setting of the
data sent from the master).
• The communication check is made from the first communication in the Network operation mode (can be changed by Pr.551
PU mode operation command source selection).
• The communication check time by query communication includes a no-data time (3.5 bytes).
This no-data time differs according to the communication speed, so take this no-data time into consideration when setting
the communication check time.
NOTE
• For the RS-485 terminal communication, the operation at a communication error occurrence depends on the Pr.502 Stop
mode selection at communication error setting. (Refer to
5.15.7 CC-Link IE Field Network function setting (FR-
Use the following parameters to perform required settings for CC-Link IE Field Network communication between the inverter
and other stations.
• For details on the CC-Link IE Field Network, refer to
• For the inverter operation at communication error, refer to
• Set the parameters other than Pr.434, Pr.435, and Pr.541 in the same way as when a communication option is used.
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Example: RS-485 terminal communication, Pr. 539 = "0.1 to 999.8 s"
Query communication
Operation mode External
PLC (master)
Inverter (slave)
Inverter (slave)
PLC (master)
Pr.539
Communication
check counter
ALM
Broadcast communication
Operation mode External
PLC (master)
Inverter (slave)
Inverter (slave)
PLC (master)
Pr.539
Communication
check counter
ALM
A800-GF)
search engine
NET
Query Message1
Data absence time
(3.5 bytes or more)
Response Message1
Check start
OFF
NET
Query Message1 Query Message2
Data absence time
(3.5 bytes or more)
Check start
OFF
page 663.)
page 752.
page 663.
Query Message2
Fault
(E.SER)
Response Message2
Fault
(E.SER)
Time
ON
5.15 (N) Communication operation parameters
1
2
3
4
5
6
7
Time
ON
8
9
10
699
5. PARAMETERS