Teledyne 465L Modbus Register Maps, Modbus Commands Supported, Description, Function Code

Teledyne API Model 465L O3 Monitor Operation Manual

8.6.MODBUS Register Maps

8.6.1.MODBUS Commands Supported

Table 8-6 lists the MODBUS commands that are supported by the M465L. Note that the “Write” commands will only work with registers that are configured as Read/Write, see Section 8.6.4. The “Read” commands can be used with any register.

Table 8-6: Supported MODBUS Commands

MODBUS	Description
Function Code
01	Read Coils
02	Read Discrete Inputs
03	Read Holding Registers
04	Read Input Registers
05	Write Single Coil
06	Write Single Register
15	Write Multiple Coils
16	Write Multiple Registers

8.6.2.Notes on MODBUS registers

Concentration values in the MODBUS registers are always expressed in units of PPB (parts- per-billion,) regardless of the concentration units setting of the monitor.

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