Modbus Register Maps; Modbus Commands Supported; Notes On Modbus Registers; Table 8-6: Supported Modbus Commands - Teledyne 465L Operation Manual

Note: If you do not receive "Reply" messages, make sure the unit is
properly attached to the network and that the IP address assigned is
valid for the particular network segment you are working with. If you
are not sure, check with your systems administrator.
9. Click the Close button to close the dialog box and return to the main
window.
8.6.

MODBUS Register Maps

8.6.1. MODBUS Commands Supported

Table 8-6 lists the MODBUS commands that are supported by the 465L. Note that
the "Write" commands will only work with registers that are configured as
Read/Write, see Section 8.6.4.
register.
MODBUS
Function Code
01
02
03
04
05
06
15
16

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.
05509G DCN6806

Table 8-6: Supported MODBUS Commands

Description
Read Coils
Read Discrete Inputs
Read Holding Registers
Read Input Registers
Write Single Coil
Write Single Register
Write Multiple Coils
Write Multiple Registers
Teledyne API Model 465L O
Teledyne API Model 465L O 3 Monitor Operation Manual
The "Read" commands can be used with any
Monitor Manual
3
59