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7-2 Link function (operation selection)
The setting (valid/invalid) for command data and operation data during the communication valid period is
possible individually by the setting of " H30: Serial link (Function selection)". (By making the communication
always valid without setting at the multi-function terminals, changeover for the H30 data valid/invalid can change
over the communication valid/invalid, similar to the changeover with multi-function command terminals.)
During communication is valid During communication is invalid
Link function
H30
SW1 (Command data) SW2 (Operation data) SW1, SW2
0 Invalid Invalid
1 Valid Invalid
2 Invalid Valid
3 Valid Valid
Invalid
7-3 Coexistence of link (option) and RS485 communication
When the link options (such as T link, field bus, etc.) are mounted on the inverter, the communication is
positioned as described below and the functions are restricted.
Link : The operation through the communication (either one of command data and
operation data or both), the operation monitoring, and the reading and changing
of functions are possible.
The communication: The operation monitoring and the reading and changing of functions as loader are
possible (Operation through the communication is impossible).
Note:
1) The communication valid bit of M14: Operating state becomes the state signal of link option and not
of RS485.
2) When the command data and operation data are accessed from RS485, NAK is returned.
3) If the writing of functions is performed through this communication during the writing of functions by
the link, NAK (no writing right error) is returned.
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