Modbus RTU - PR53 - PR53AC - PR53AP - PR53GC - PR53GP - PR53M - PR53SD - PR53W

PR53 Series User Guide

Document code
M212898EN
Revision
E
Language
English
Product
PR53
PR53AC
PR53AP
PR53GC
PR53GP
PR53M
PR53SD
PR53W
Document type
User guide

The Modbus RTU protocol is available through the RS-485 port. The RS-485 port can be used as a Modbus RTU server device. The supported Modbus function codes are 3 (Read Holding Registers) and 4 (Write Holding Registers). The default Modbus ID is 240. The ID can be changed through the service port using Vaisala Insight software and a USB adapter.

The following table lists the default communication settings used when Modbus is enabled at the factory (chosen when ordering).

Table 1. Default Modbus communication settings
Description Default value
Baud rate 19200
Parity No parity
Number of data bits 8
Number of stop bits 2