![background image](http://html1.mh-extra.com/html/aandd/ad-8551r/ad-8551r_instruction-manual_446313004.webp)
2
1.
Introduction
Thank you for purchasing the AD-8551R Modbus RTU convertor.
Please read this manual completely before using the AD-8551R.
Features
The AD-8551R converts the RS-232C communications of the weighing device into RS-485 (Modbus RTU)
communications (RS-232C/RS-485 converter). Use of the RS-485 enables the collection of data control of up to 31
weighing devices (addresses ranging from 1 to 63) by a single PLC.
■
The RS-485 communication method of the AD-8551R can be used by selecting either Modbus RTU communication
(Modbus RTU mode) or ASCII code command communication (command mode).
■
The measurement value can be reset to zero (re-zero) by operation from the PLC or PC.
■
When connected to an AD-4212C and AD-4212D, etc., it is possible to change the response speed, perform
calibration with an external weight, and supply power from the weighing device.
■
The hooks on the back of the AD-8551R allow one-touch mounting on a DIN rail.
RS-232C
communication
Weighing device
Weighing device
AD-8551R
Weighing device
RS-485
communication
Host
(PLC, PC, etc.)
AD-4212C, etc.
・
・
・
・
・
・
AD-8551R
AD-8551R
・
・
・
RS-232C
communication
RS-232C
communication