Transactions On Modbus Networks - Hitachi Abb Rvt Installation Und Betriebsanleitung

CAUTION: Be careful that the RS485 MODBUS ADAPTER is the one with a GREEN text color (3.3V power supply).
The one with a WHITE text color is reserved for the old model (5V power supply).
2.3.

Transactions on Modbus Networks

Modbus protocol uses a master–slave technique, in which only one device (the master) can initiate transactions
(called 'queries'). The other devices (the slaves) respond by supplying the requested data to the master, or by taking
STATUS
Approved
SECURITY LEVEL
Public
DOCUMENT ID
9AKK106713A9758
RVT CO MM UNI CATI O N
REV. LANG. PAGE
K en 6/71
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