AND Device Net.Interface AD-4402 OP-21, Инструкция по эксплуатации

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AD-4402 OP-21 Page 3
2.
2. 2.
2. Outline and Feature
Outline and Feature Outline and Feature
Outline and Featuressss
The option (OP-21) is a special interface for the AD-4402 weighing indicator. The
indicator, with the interface installed, is used for a slave device in the predefined
Master/Slave Connection Set of the DeviceNet.
With the option installed in the indicator, the master (PLC scanner) can control the
operation mode, the I/O settings and can read weighing data into the memory of the
master.
PLC: Programmable Controller or Process Controller
There are two operation methods for the indicator. "Command without handshake
(Command Bit)" and "Command with handshake (Command)".
The specification of the option is confirmed by the self-test program of the ODVA
conformance test software ver.A-14. The indicator, with the interface installed,
complies with the DeviceNet specifications.
ODVA: Open DeviceNet Vender Association Inc.
Advice
Knowledge of the weighing indicator and DeviceNet specifications is required for
proper understanding of this instruction manual.
Refer to the special references for DeviceNet specifications, basic term, wiring,
setting, operation and control of the DeviceNet.
Use authorized cables, tap (connector) and power tap, network power supply unit and
other units for the DeviceNet.
Caution
The interface occupies 8 data 8 bytes for OUT DATA and 16 data bytes for IN
DATA in the memory area of the PLC. Avoid crossing the memory area of other
slave devices.
The IN DATA will be all zeroes, when the AD-4402 is in the calibration mode or
the function mode.