KROHNE IFC 100 Converter Modbus EN - Manual (Page 18)

6
MODBUS PROTOCOL
18
IFC 100
www.krohne.com 08/2014 - 4001410101 - AD Modbus IFC 100 R01 en
6.10.2 Coil Temperature Calibration
1 Read actual Rsp,20 Read actual Rsp,20 Read actual Rsp,20 Read actual Rsp,20
Read Holding Register 43026 type float
(Modbus Fct. 0x03)
2 User checks the value with the calibration value
on the type plate of the device
2a Rsp,20 not correct
2b Write correct Rsp,20 Write correct Rsp,20 Write correct Rsp,20 Write correct Rsp,20
Write Holding Register 43026 type float
(Modbus Fct. 0x10)
2c Rsp,20 correct or corrected
3 User enters the actual coil temperature in K User enters the actual coil temperature in K User enters the actual coil temperature in K User enters the actual coil temperature in K
This is the target for the calibration
4 Write actual coil temperature Write actual coil temperature Write actual coil temperature Write actual coil temperature
Write Holding Register 43028 type float
(Modbus Fct. 0x10)
5 Start coil temperature calibration: Start coil temperature calibration: Start coil temperature calibration: Start coil temperature calibration:
Set single coil 2001 to 1 (Modbus Fct. 0x05)
6 Check status of calibration: Check status of calibration: Check status of calibration: Check status of calibration:
Read single coil 2001 (Modbus Fct. 0x01)
6a [2001 == 1: calibration running]
6b [2001 == 0: calibration complete]
7 Read Calibration Value Read Calibration Value Read Calibration Value Read Calibration Value
Read Input Register 20000 type foat
(Modbus Fct. 0x04)
8 Write the calibration value Write the calibration value Write the calibration value Write the calibration value
Write Holding Register 43030 type foat
(Modbus Fct. 0x10)
9 Activate new values Activate new values Activate new values Activate new values
Set single coil 1001 to 1 (Modbus Fct. 0x05)
9a This results in a warm start of the device.
Will take maximum 5s.
.book Page 18 Monday, July 28, 2014 11:32 AM