6F3B0253
7. Instructions
< Read command mode (Mode 2) >
When the instruction input comes ON with the operand B+1 is 2, the Read command mode (mode 2) is selected. In this mode, the
Repeat
Sends the specified command to #n Inverter
Receives the response and stores the data into the register
The target Inverter number #n is specified by the operand B.
The scan execution status and the Inverter communication status are stored in the operand B+2 to B+7.
The command setting register and the response data storing register is indirectly specified by the operand A and A+1.
When the instruction input is reset to OFF, the operation is stopped after receiving the response from the Inverter.
Example
D1000
D1001
Data table designation
4RW200
3000RW201 RW202 RW203 RW204 RW205 RW206 RW207
Parameter & status
3
2 (mode 2)
Execution status
Comm error code
Inverter comms
status map
D1010
D1011
H0030 (fixed)
0 (fixed)
When the data for each operand are set as above, the following operation condition is specified.
•RW200=3 ⇒ The target Inverter number is 3. Therefore
•D1000=4 & D1001=3000 ⇒ D3000 is specified as the command setting register and D3001 is specified as the response data storing register.
Data table:
Register
D3000
D3001
Data contents
Command code
Response data
Signal direction
←Read
Example operation:
For example, to read the output current from the #3 Inverter, set the command code HFE03 into D3000. Then the response data is stored in D3001. If the response data is 1915, it means 19.15 %. For the command code and the data format of the response, refer to your Inverter manual.
Basic Hardware and Function 251
