Table 9 - Available Coils - ETC Sasquatch User Manual

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Table of Contents

Appendix C

Modbus Register Map

The following sections outline each of the sections of registers as defined by the Modbus protocol.

These groups are as follows:

•

Coils – Single bit registers that can be written to cause an action

•

Input Discretes – single bit registers that are a read only status

•

Input Registers – 16 bit registers that are a read only status

•

Holding Registers – 16 bit registers that can be read and written.

Note: Any registers that are grayed out have not been implemented. Writes to these registers will be

ignored. Reads from these registers will return unpredictable results.

Note: Modbus uses a register number, which starts at 1 to describe the location of data. The actual

address that is passed in the protocol layer is 0. This means that depending on the tool you are using,

you may need to subtract 1 from the register number to access the appropriate data.

Coils