LS ELECTRIC SV-iS7 Series, User Manual

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Communication Function
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11.9 Communication Frame Monitoring
You can easily monitor the status (normal, CRC/Checksum error, other errors, etc.) of the
communication frame being received from the master by using the keypad.
Group Code LCD Display Setting Display Unit
COM
90 Comm Mon Sel 0 Int 485 -
91 Rcv Frame Num - - -
92 Err Frame Num - - -
93 NAK Frame Num - - -
94 Comm Update
0 -No-
-
1 -Yes-
Communication Frame Monitoring Details
Code Description
COM-90 Comm Mon Sel Selects the communication channel to monitor.
COM-91 Rcv Frame Num
Counts the number of communication frames received normally
from the master device.
COM-92 Err Frame Num
Counts the number of CRC errors when the Modbus-RTU is set and
counts Checksum errors when the LS Inv 485 is set.
COM-93 NAK Frame Num
Counts the number of errors (communication address errors, data
range errors, writing prohibition errors) that occur in the
communication frames received from the master device.
COM-94 Comm Update
Reconnects the communication after the initial status parameter is
changed to communication speed (baud rate), etc.
11.10 Special communication Area Settings
The following table lists the memory map of the entire memory addresses used for network
communication in the iS7 series inverters.
Communication Area Memory Map Description
Common iS5 compatible 0h0000 - 0h00FF Area compatible with iS5