Extension Board for MODBUS on SMARTCON Control Unit
DS-ENGLISH-MODBUS-V2.01-2019.05.15 4 Specification of Input and Output Data
4.2 Output Data Modules (Slave to Master communication)
Output data can be handled with following Modbus functions:
Function:
03 (03 hex) Read Holding Register Reads one single register from the slave.
04 (04 hex) Read Input Register Reads one single register from the slave.
23 (17 hex) Read/Write Multiple Registers
Writes data to multiple consecutively
registers in the slave and reads multiple
consecutively registers from the slave. The
write operation is performed before the read
operation.
4.2.1 Actual position value
Register number: 257, address 0100
Hex
Data format: 16bit, only the lowest 10 bits (0 . . . 1023) are in use.
Other bits are reserved for future use and have to be set to zero!
Value Function: Description:
0 (0
Hex
) 0%
512 (200
Hex
) 50%
1023 (3ff
Hex
) 100%
4.2.2 Status
Register number: 258, address 0101
Hex
Data format: 16 bit (Bitfield)
Bitno.: Function: Description:
Bit = 0 Bit = 1
0 READY - Actuator is ready.
1
END POSITION
OPEN
-
End position OPEN reached (under consideration of switch-off
mode (torque or travel dependent)).
2
END POSITION
CLOSE
-
End position CLOSE reached (under consideration switch-off
mode (torque or travel dependent)).
3 TRAVEL OPEN -
End travel OPEN reached (under consideration of switch-off
mode (torque or travel dependent)).
4 TRAVEL CLOSE - End travel CLOSE reached (travel dependent).
5 TORQUE OPEN - Power-off torque in opening direction exceeded.
6 TORQUE CLOSE - Power-off torque in closing direction exceeded.
7 MOTORTEMP. - Motor temperature sensor signal (overheat).
8 OPENING - Actuator moving in OPEN direction.
9 CLOSING - Actuator moving in CLOSE direction.
10 LOCAL - Switch in LOCAL mode position.
11 REMOTE - Switch in REMOTE mode position.
12 LOCK OPEN -
Latched OPEN command with highest priority. (Refer to
Command bit 10 und 12)
13 LOCK CLOSE -
Latched CLOSE command with highest priority. (Refer to
Command bit 10 und 12)
14 LIVEBIT 1 Livebit1 toggles with 1 Hz.
15 LIVEBIT 2 Livebit2 is a copy of the watchdog toggle-bit. (Refer to command Bit 7)
9
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