The following tables contain a query message directed to the VFD68 subordinate address 5 (H05) instructing a 2 byte preset data write a value of 60HZ (H1770) to the running frequency RAM register address (system environment variable) of 40014, followed by the VFD68 response message (Table 1, Table 2).
| Subordinate Address | Function | Register Address | Preset Data | CRC Check | |||
|---|---|---|---|---|---|---|---|
| H05 (8 bit) | H06 (8 bit) |
H00 (8 bit) |
H0D
(8 bit) |
H17
(8 bit) |
H70
(8 bit) |
H17
(8 bit) |
H99
(8 bit) |
| Subordinate Address | Function | Register Address | Preset Data | CRC Check | |||
|---|---|---|---|---|---|---|---|
| H05 (8 bit) | H06
(8 bit) |
H00
(8 bit) |
H0D
(8 bit) |
H17
(8 bit) |
H70
(8 bit) |
H17 (8 bit) |
H99
(8 bit) |
Note: For broadcast communication, no response is returned in reply to a query;
therefore, the next query must be made when the VFD processing time has elapsed after
the previous query.
1 Subordinate address, function, register address, preset
data, and CRC check of the normal response are identical to those of the
query message. No response is made for broadcast communication.