SX5500-0081 | DeviceNet Expansion Module

Name: SX5500-0081 | DeviceNet Expansion Module
Rating: 5 (132 reviews)

The SX5500-0081 DeviceNet expansion module is used with the SX51 series iComputer products. It features DeviceNet master functionality, supports up to 64 slaves, has a minimum polling cycle of 1 ms, a communication speed of up to 500 kbps, and a maximum communication distance of 500 meters (at 125 kbps).

Overview

Performance Indicators	Description	Typical Values / Range
Node Capacity	Maximum number of supported slave devices	0-64 (Depends on network configuration and address allocation)
Scan Cycle	The time for the master station to complete a polling cycle of all slave station data	It can be configured to allow different slave polling periods. The interval can be set from 1 to 100 ms (depending on the number of slaves and the amount of data).
Mapping IO Data Types	Supports mapping data types	BYTE、BOOL。Users parse variables from a byte array based on their own business needs
Number of mapped IO points	Maximum Mapped IO Count	65535
I/O Data Throughput	The main site can handle input/output data per second	Depends on the baud rate (higher at 500 kbps, for example)
Communication Speed	Communication baud rate of DeviceNet network	Supports three selectable speeds：125 kbps、250 kbps、500 kbps
Response Time	Delay from sending a command from the master to receiving a response from the slave	0.5-10 ms (Related to network load)
Communication Distance	Communication distance of the DeviceNet network	125 kbps：Maximum distance 500 meters 250 kbps：Maximum distance 250 meters 500 kbps：Maximum distance 100 meters
Abnormalities and Diagnosis	Handling methods when DeviceNet communication errors occur, such as built-in CRC check, timeout detection, and automatic retransmission mechanism
Abnormalities and Diagnosis	Supported network diagnostic capabilities (such as node status monitoring, disconnection detection, etc.)
Hot-swappable support	Supports hot-swapping of slave devices (adding/removing without powering off)
Data Frame Format and Data Transmission	Data frame format	Based on CAN 2.0B extended frame, the effective data payload is 8 bytes
	Data transmission mode	Explicit Messaging: Used for configuration, diagnostics, and control commands, with lower priority. Implicit Messaging: Used for periodic data exchange (such as I/O data), with higher priority.
	Priority mechanism	The priority of CAN messages is defined by their identifiers (ID), with high-priority messages transmitted first.
Data Consistency	I/O data consistency ensured by the main site (such as global data synchronization time)	≤1 ms (high-performance master station)
Regulations and Standards	Topology	Linear bus topology, supports daisy chain or tree connections
	International standard	IEC 61158、ISO 11898
	Industry standards	ODVA standards, CIP protocol suite
	Protocol compatibility	DeviceNet 2.0 or higher
	Transmission medium	Shielded twisted pair or unshielded twisted pair