YOKOGAWA ROTAMASS Total Insight User Manual

Quick Reference Instruction Manual for Spare
Transmitter replacement
Wiring
58 / 76
IM01U10A01-00EN-R, 1
st
edition, 2019-12-09
7.4.4.4 HART and Modbus communication
HART communication
HART
interface
For devices with HART communication, the HART interface, along with the analog signal,
is available at the output Iout1. A load resistance of 230 – 600Ω at Iout1 is recom-
mended.
How to connect to the communication tools is described in the applicable Software In-
struction Manual (SW-IM) IM01U10S01-00␣␣-R.
Modbus communication
Modbus
interface
Modbus interface of Rotamass Total Insight is implemented in accordance with "MOD-
BUS over serial line specification and implementation guide V1.02", for details of instru-
mentation see website of the Modbus organization (http://www.modbus.org/).
Modbus
connections
Tab.13: Connection terminal assignment for Modbus
Terminal Description
I/O3 - Modbus C (Common)
I/O4 + Modbus B (D1)
I/O4 - Modbus A (D0)
MODBUS_B
MODBUS_A
MODBUS_C
IO4+
IO4-
IO3-
RD+
RD-
GND
RS485
ROTAMASS
Modem
Fig.30: MODBUS communication
Modbus
cable
3-Wire cable (twisted pair (D0, D1) and Common) with shield should be used. Wire gauge
should be AWG24 or wider.
Rotamass Total Insight has a RS485 electrical interface, operating in slave mode and
communicating with the following default specification:
Default
Modbus setting
▪ Modbus baud rate: 19200 bps
▪ Modbus transfer mode: RTU
▪ Modbus parity: Even
▪ Modbus stop bit: 1 stop bit
For further details, see applicable Software Instruction Manual (SW-IM)
IM01U10S03-00␣␣-R.

YOKOGAWA ROTAMASS Total Insight Specifications

General

Brand	YOKOGAWA
Model	ROTAMASS Total Insight
Category	Measuring Instruments
Language	English