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Modbus protocol, 9 diagnostics – KROHNE IFC 100 Converter Modbus EN User Manual

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6

MODBUS PROTOCOL

16

IFC 100

www.krohne.com

08/2014 - 4001410101 - AD Modbus IFC 100 R01 en

6.8.3 Modbus parameters

6.9 Diagnostics

The Modbus interface supports the diagnostic function defined by the "Modbus Application
Protocol Specification".

Function code is 08 (0x08).

Modbus protocol
address

Description and settings

Converter Fct.
No.

Type

Number of
registers

50000

baud rate

baud rate

baud rate

baud rate

1200 / 2400 / 3600 / 4800 / 9600 / 19200

(default) / 38400 / 57600 / 115200

C5.8.2

ulong

2

50002

slave address

slave address

slave address

slave address

C5.8.1

byte

1

50003

parity

parity

parity

parity

0 = even parity (default)

1 = odd parity

3 = no parity

C5.8.3

byte

1

50004

data format

data format

data format

data format

1 = Big Endian

2 = Little Endian

C5.8.4

byte

1

Sub function code

Name

hex

dec

00

00

Return Query Data

01

01

Restart Communication Option

04

04

Force Listen Only Mode

0A

10

Clear Counters

0B

11

Return Bus Message Count

0C

12

Return Bus Communication Error Count

0D

13

Return Bus Exception Count

0E

14

Return Slave Message Count

0F

15

Return Slave No Response Count

10

16

Return Slave NAK Count (counter not used)

11

17

Return Slave Busy Count (counter not used)

12

18

Return Bus Character Overrun Count

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