Chapter 9 Communication instructions
200 Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
MODBUSLOCPARA data type
The following table describes the MODBUSLOCPARA data type parameters.
Parameter Data type Description
Channel UINT Micro800 PLC serial port number:
• 2 for the embedded serial port, or
• 5-9 for serial port plug-ins installed in slots 1 through
• 5 for slot 1
• 6 for slot 2
• 7 for slot 3
• 8 for slot 4
• 9 for slot 5
TriggerType USINT Represents one of the following:
• 0: Msg Triggered Once (when IN goes from False to True)
• 1: Msg triggered continuously when IN is True
• Other value: Reserved
Cmd USINT Represents one of the following:
• 01: Read Coil Status (0xxxx)
• 02: Read Input Status (1xxxx)
• 03: Read Holding Registers (4xxxx)
• 04: Read Input Registers (3xxxx)
• 05: Write Single Coil (0xxxx)
• 06: Write Single Register (4xxxx)
• 15: Write Multiple Coils (0xxxx)
• 16: Write Multiple Registers (4xxxx)
• Others: See MODBUSLOCPARA custom command support.
ElementCnt UINT Limits
• For Read Coil/Discrete inputs: 2000 bits
• For Read Register: 125 words
• For Write Coil: 1968 bits
• For Write Register: 123 words
To Next Page
Loading...
