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MIW-DRE-SV-000 - 05 / 07 / 2022 9 - 100
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DRE ELEKTRONISK FLÄKTHASTIGHETSREGULATOR,
DIN-SKENMONTERING
MODBUS REGISTERLISTA
INPUT REGISTERS
Data type Description Data Values
1Output value unsigned int. Current output value 0,
30—100
0 =
30 =
100 =
0 % Us* (0 VAC)
30 % Us (70 VAC)
100 % Us (230 VAC)
2Current output step unsigned int. Current output step 0—9
0 =
...
9 =
step 0
...
step 9
3Umin unsigned int. Minimum output value 30—65 30 =
65 =
30 % Us (70 VAC)
65 % Us (150 VAC)
4Umax unsigned int. Maximum output value 75—100 75 =
100 =
75 % (170 VAC )
100 % (230 VAC)
5Regulation type unsigned int. Regulation type (Normal / Inverse) 0—1 0 =
1 =
Normal
Inverse
6Start-up type unsigned int. Start-up type 0—1 0 =
1 =
Kick start
Soft start
7 Kick start time unsigned int. Kick start duration 3—9 5 = 5 s
8Unregulated output state unsigned int. Unregulated output state 0—1 0 =
1 =
Off
On
9 Reserved, returns 0
10 Unit status unsigned int. Current controller working state 0—2
0 =
1 =
2 =
Off (a decimal point is visible)
On (the current step is visible)
Modbus connected (‘d’ is visible)
HOLDING REGISTERS
Data type Description Data Default Values
1Device slave address unsigned int. Modbus device address 1—247 1
2Modbus baud rate unsigned int. Modbus communication baud rate 0—6 2
0 =
1 =
2 =
3 =
4 =
5 =
6 =
4.800
9.600
19.200
38.400
57.600
115.200
230.400
3Modbus parity mode unsigned int. Parity check mode 0—2 1
0 =
1 =
2 =
8N1
8E1
8O1
4Device type unsigned int. Device type (Read only) DRE-1 =
3008
5HW version unsigned int. Hardware version (Read only) XXXX 0 x 0100 = HW version 1.0
6FW version unsigned int. Firmware version (Read only) XXXX 0 x 0120 = FW version 1.2
7Operating mode unsigned int. Enables Modbus control 0—1 00 =
1 =
Standalone mode
Modbus mode
8Output overwrite unsigned int. Enables direct control over the output. Active
only if holding register 7 is set to 1. 0—1 00 =
1 =
Disabled
Enabled
9-10 Reserved, returns 0
11 Umin unsigned int. Minimum output value selection. Active only
if holding register 7 is set to 1. 30—65 30 30 =
65 =
30 % Us (70 VAC)
65 % (150 VAC)
12 Umax unsigned int. Maximum output value selection. Active only
if holding register 7 is set to 1. 75—100 100 75 =
100 =
75 % Us (170 VAC)
100 % Us (230 VAC)
13 Regulation type unsigned int. Regulation type (Normal / Inverse) selection.
Active only if holding register 7 is set to 1.0—1 00 =
1 =
Normal
Inverse
14 Start-up type unsigned int. Start-up type selection. Active only if holding
register 7 is set to 1. 0—1 00 =
1 =
Kick start
Soft start
15 Kick start time unsigned int. Kick start duration selection. Active only if
holding register 14 is set to 0. 3—9 5 5 = 5 s
16 NBT unsigned int. Sets the network bus termination resistor.
Active only if holding register 7 is set to 1. 0—1 00 =
1 =
Disconnected
Connected
17-20 Reserved, returns 0
21 Output overwrite
value unsigned int. Output overwrite value. Active only if
holding registers 7 and 8 are set to 1.
0,
30—100 0
0 =
30 =
100 =
0 % Us (0 VAC)
30 % Us (70 VAC)
100 % Us (230 VAC)
22-30 Reserved, returns 0
If you want to find out more about Modbus over serial line, please visit: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf