Prosoft-technology MVI71-MNET Instrukcja Użytkownika Pobierz pdf (Strona 38)

MVI71-MNET ♦ PLC Platform Module Configuration

Modbus TCP/IP Interface Module User Manual

Page 38 of 109 ProSoft Technology, Inc.

June 23, 2009

Output Offset

This parameter defines the start register for the Modbus command data in the

internal database. This parameter is enabled when a value greater than 0 is set.

For example, if the Output Offset value is set to 3000, data requests for Modbus

Coil Register address 00001, will use the internal database register 3000, bit 0. If

the Output Offset value is set to 3000, data requires for Modbus Coil register

address 00016 will use the internal database register 3000, bit 15. Function

codes affected are 1, 5, and 15.

Bit Input Offset

0 to 3999

This parameter defines the start register for Modbus command data in the

internal database. This parameter is enabled when a value greater than 0 is set.

For example, if the Bit Input Offset value is set to 3000, data requests for Modbus

Input Register address 10001 will use the internal database register 3000, bit 0. If

the Bit Input Offset is set to 3000, data requests for Modbus Coil register address

10016 will use the internal database register 3000, bit 15. Function code 2 is

affected.

Holding Register Offset

0 to 4999

This parameter defines the start register for the Modbus Command data in the

internal database. This parameter is enabled when a value greater than 0 is set.

For example, if the Holding Register Offset value is set to 4000, data requests for

Modbus Word register 40001 will use the internal database register 4000.

Function codes affected are 3, 6, 16, & 23.

Word Input Offset

0 to 4999

This parameter defines the start register for Modbus Command data in the

internal database. This parameter is enabled when a value greater than 0 is set.

For example, if the Word Input Offset value is set to 4000, data requests for

Modbus Word register address 30001 will use the internal database register

4000. Function code 4 is affected.

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Prosoft-technology MVI71-MNET Instrukcja Użytkownika Strona 38