Outline And Features - AND Profibus Interface AD-4402 OP-22 Instruction Manual

2. 2. 2. 2. Outline and Feature Outline and Features s s s
Outline and Feature Outline and Feature
The option, OP-22, is a special interface only for the AD-4402 weighing indicator. The
indicator is used as a slave DP device in PROFIBUS.
PROFIBUS: Process filed bus
DP: Decentralized Periphery
With the option installed in the indicator, the master (PLC ) can control the operation
which is to be stored the I/O settings and to read data into the memory of the master.
PLC: Programmable LogicController or Process Controller
There are two operation methods for the indicator. "Command without handshake
(Command Bit)" and "Command with handshake (Command)".
Advice
Knowledge of the weighing indicator and PROFIBUS specifications are required for
proper understanding of this instruction manual.
Refer to the special references for PROFIBUS specifications, technical terms, wiring,
settings, operation and control of PROFIBUS.
Use authorized cables and connectors for PROFIBUS.
Caution
The interface occupies 12 bytes for OUT DATA and 20 bytes for IN DATA in the
memory area of the PLC. Always use the allocated memory area when
connecting to other slave devices.
The IN DATA will be all zeroes, if the AD-4402 is not in the weighing mode.
AD-4402 OP-22 Page 3