Parameter Details
12
12.6 F: OPTIONS
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 651
Note:
• If the timeout or message occurs 10 consecutive times, the master drive stops transmitting to the slave drives. Reset the fault to restart
communication.
• If you change the access command before the Modbus access completion flag turns on, the drive will not execute the command from
before.
Special Register Specifications
Table 12.37 Command Data
Register
No.
Description
1
Command source update (15C5H) This flag enables command updates.
bit 0 Drive 1 Update Command Enabled
To input the Run command and frequency reference at the same time, change the bit
value from 0 to 1 after you write all commands.
bit 1 Drive 2 Update Command Enabled
bit 2 Drive 3 Update Command Enabled
bit 3 Drive 4 Update Command Enabled
bit 4 Update Register Access Command Enabled
bit 5 - F Reserved
2
Run Command (Drive 1) (15C6H)
bit 0
H5-12 = 0: FWD/Stop
0 = Stop
1 = Forward run
H5-12 = 1: Run/Stop
0 = Stop
1 = Run
bit 1
H5-12 = 0: REV/Stop
0 = Stop
1 = Reverse run
H5-12 = 1: FWD/REV
0 = Forward run
1 = Reverse run
bit 2 External Fault
bit 3 Fault Reset
bit 4 ComRef
bit 5 ComCtrl
bit 6 - F Reserved
3 Frequency Reference (Drive 1) (15C7H) The unit of measure changes when o1-03 changes.
4 Run Command (Drive 2) (15C8H)
5 Frequency Reference (Drive 2) (15C9H)
6 Run Command (Drive 3) (15CAH)
7 Frequency Reference (Drive 3) (15CBH)
8 Run Command (Drive 4) (15CCH)
9 Frequency Reference (Drive 4) (15CDH)
10
Slave Address for Reg. Access + Read/Write (15CEH)
bit 0
bit 1
bit 2
bit 3
Slave address
0: Broadcast Messages (Modbus)
1: Drive 1
2: Drive 2
3: Drive 3
4: Drive 4
5: Broadcast Messages (run command and frequency
reference)
When bit 0 to 3 = 0, access is enabled for broadcast messages only.
When bit 0 to 3 = 5, access is enabled for Run command and frequency reference
broadcast messages only. Drive 0 is excluded.
bit 4 0: Read, 1: Write
bit 5 - F Reserved
11 Register number (15CFH)
12 Data (write register) (15D0H)
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