SCHNEIDER AS-S985-022 is a bus module in the Modicon series PLC (Programmable Logic Controller) product line from Schneider Electric. This module is mainly used to connect a PLC system to a Modbus Plus network and supports data communication.
The following are the main features and functions of this product:
1. Core Functions
Modbus Plus Network Adapter:
The AS-S985-022 is primarily used to connect Modicon series PLCs (such as TSX and Premium) to a Modbus Plus network, enabling high-speed data communication with other Modbus Plus devices.
System Integration:
As a PLC bus module, it is typically installed in a control cabinet and works together with CPU modules (such as PC-E984-685) and I/O modules (such as AS-B828-016) to form a complete automation control system.
2. Technical Specifications
- Communication Speed: Supports a data rate of 38,400 bps (Modbus Plus standard).
- Maximum Number of Nodes: Supports network topologies with up to 15 nodes.
- Power Supply: Typically supports 115 VAC or 24 VDC.
- Electrical Characteristics: Includes protection against overvoltage, undervoltage, and overcurrent to ensure safe system operation.
3. Installation and Operation
- Installation Location: The module is usually mounted on a DIN rail inside a control cabinet and must be used in conjunction with a compatible CPU module.
- Wiring Method: Connected to the network using standard Modbus Plus cables, typically shielded twisted-pair cables.
4. Compatibility
- Applicable Series: Mainly used with Modicon Premium series (such as PC-E984-685) and Modicon TSX series PLCs.
- Network Protocol: Supports Modbus Plus only (not Modbus RTU), so the network protocol must be confirmed before use.
Summary:
The AS-S985-022 is a dedicated communication module designed to connect Modicon PLCs to a Modbus Plus network and is a key component for building efficient fieldbus communication systems.
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