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Modbus RTU Registers 25 - 28: Drive Serial Number
The drive serial number may be read using these four registers. The serial number has 11 digits, stored as follows:-
Register 28
x
x
e.g.
Register 25
1
Register 26
1
Register 27
8745
Register 28
57
Drive Serial Number
5
Start Mode, Auto Restart & Fire Mode Configuration (P-30)
This parameter contains 3 values, stored as follows:-
High Byte
15
14
13
12
11
Input Type
Input Sense
0: Constant
0: Normally Closed (Open
1: Momentary Start
Fire Mode)
1: Normally Open (Closed
Fire Mode)
DC Injection Configuration (P-32)
The parameter value is stored as a combined 16 bit word which is constructed as follows:-
High Byte
15
14
13
12
11
DC Injection Mode
0: DC Injection on Start
1: DC Injection on Stop
2: DC Injection on Start & Stop
Communications Configuration (P-36)
This Register entry contains multiple data entries, as follows:-
High Byte
15
14
13
12
11
Trip Configuration
Baud Rate
Data values can be interpreted as follows:-
Drive Address
1 to 63
Baud Rate
Setting
0
1
2
3
4
5
6
7
8
9
10
Trip Time Set-
0
Comms Loss Trip Disabled
up
1
30ms Watchdog, Trip on Comms Loss
2
300ms Watchdog, Trip on Comms Loss
3
1000ms Watchdog, Trip on Comms Loss
4
3000ms Watchdog, Trip on Comms Loss
5
30ms Watchdog, Ramp to Stop on Comms Loss
6
300ms Watchdog, Ramp to Stop on Comms Loss
7
1000ms Watchdog, Ramp to Stop on Comms Loss
8
3000ms Watchdog, Ramp to Stop on Comms Loss
Display Scaling (P-40)
The parameter value is stored as a combined 16 bit word which is constructed as follows:-
High Byte
15
14
13
Display Scaling Source
Display Scaling Factor: 3dp, e.g. 0 – 16000 = 0.000 – 16.000
0: Motor Speed
1: Motor Current
2: Analog Input 2 Signal
3: PI Feedback
Optidrive Compact-2 Engineering Guide Issue 07.docx
Register 27
x
x
x
7
8
7
4
Low Byte
10
9
8
7
Start Mode / Auto Restart as:-
0: Edge-r
1: Auto-0
2: Auto-1
3: Auto-2
4: Auto-3
5: Auto-4
6: Auto-5
Low Byte
10
9
8
7
DC Injection Duration: 1dp, e.g. 0 – 250 = 0.0 – 25.0s
Low Byte
10
9
8
7
Drive Address
Modbus RTU
115k2
115k2
9k6
19k2
38k4
57k6
115k2
115k2
115k2
115k2
115k2
Low Byte
12
11
10
9
8
7
6
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Register 26
x
x
5
0
1
0
6
5
4
3
6
5
4
3
6
5
4
3
CAN
500
500
500
500
500
500
500
125
250
500
1000
5
4
3
2
1
0
Register 25
x
x
0
1
2
1
0
2
1
0
2
1
0
x
x
45
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