4-2 Function Mode The Inverter ignores a query and does not respond when: •The broadcast is received. •A communication error is detected in receiving a query. •The query slave address does not correspond with the slave address set for the Inverter. •The time interval between 2 pieces of data constituting the message is less than a 3.5-character length. •Query data length is inappropriate. •The reception interval in a frame exceeds the 1.5-character length. Note: Provide a timer in the master to monitor the response, and if no response is returned within the set time period, send the same query again. 4 „ Explanation of Each Function Code Reads out the coil status (ON/OFF).
Functions (Example) When reading multi-function input terminals from 1 to 5 of the Inverter with the slave address "8" Refer to the following table for the multi-function input terminal statuses. (Coils from 12 to 14 are OFF.) Query Response No. Field name Example (HEX) No. Field name Example (HEX) 1 Slave address *1 08 1 Slave address 08 2 Function code 01 2 Function code 01 3 Coil start number (MSB) 00 3 Number of data bytes 01 4 Coil start number (LSB) 06 4 Coil data *3 05 5 Number of coils (MSB) *2 00 5 CRC-16 (MSB) 92 6 Number of coils (LSB) *2 05 6 CRC-16 (LSB) 17 7 CRC-16 (MSB) 1C 8 CRC-16 (LSB) 91 *1. Broadcasting cannot be performed. *2.
When specifying the value for 0 or over 31 of the reading coils, the error code "03h" is sent. *3. Data is transferred by the number of data bytes. 4-83 Class Data Multi-function input terminals 1 2 3 4 5 Coil No. 7 8 9 10 11 Terminal status ON OFF ON OFF OFF