GB - 8
This parameters are localized in the ModBus interface and determine their behaviour.
All operator parameters can be accessed as operator parameters via ModBus (mapping
lists only for 32 bit services) as well as via diagnosis interface (HSP5).
3. Operator Parame-
ters
MDB_ProtCfg 0280h (FB.00) 5F00h
Meaning: Configures the ModBus interface protocol configuration.
Data Length: 1 Byte
Coding:
B7 B6 B5 B4 B3 B2 B1 B0
RTU
/
ASCII
PARITY
Bit7: = 1: ModBus RTU(binary) protocol
= 0: ModBus Ascii protocol (not yet adjustable)
Bit6, 5: = 00: 8 data bits, no parity bit, 2 stop bit
= 01: 8 data bits, odd parity bit, 1 stop bit
= 10: 8 data bits, even parity bit, 1 stop bit
Bit4, 3, 2, 1, 0 = reserved for further use
Default Setting: C0h: ModBus RTU, 8 data bits, even parity bit, 1 stop bit
Remarks: A changed value will immediately be active and non-volatile saved.
MDB_SlavAddr_OP 0281h (FB.01) 5F01h
Meaning: Defines the source for the ModBus slave address.
Data Length: 1 Byte
Coding: 255(dec): ModBus slave address = SY.06. No ModBus activity if SY.06 = 0!
1...247: ModBus slave address = MDB_SlaveAddr_OP
Default Setting: 255(dec): ModBus slave address = SY.06.
Remarks: A changed value will immediately be active and non-volatile saved.
MDB_MapStartAddr_Rd 0282h (FB.02) 5F02h
Meaning: Configures the first parameter address whose read access is controlled by the read
mapping list.
Data Length: 2 Byte
Coding: 1
Default Setting: 0
Remarks: A changed value will immediately be active and non-volatile saved.
MDB_MapStartAddr_Wr 0283h (FB.03) 5F03h
Meaning: Configures the first parameter address whose write access is controlled by the write
mapping list.
Data Length: 2 Byte
Coding: 1
Default Setting: 0
Remarks: A changed value will immediately be active and non-volatile saved.
Operator Parameters
Parameter name Combivis Parameter address ModBus-Register address
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