ABB ci504-pnio:s500, bus-module profinet/serial gateway,

Why Choose the ABB CI504-PNIO PROFINET Communication Interface Module?

The ABB CI504-PNIO is a compact and reliable PROFINET IO RT communication interface module designed for decentralised I/O applications within ABB S500 and AC500 automation systems. It combines PROFINET communication with three independent serial interfaces, providing a versatile gateway between industrial Ethernet networks and serial field devices.

The CI504-PNIO provides three configurable serial interfaces supporting RS-232, RS-422 and RS-485 physical layers. Each interface supports ASCII communication with configurable transmission rates from 300 bit/s to 115,200 bit/s, making the module suitable for integrating serial instruments, controllers and other field equipment into PROFINET-based automation networks.

With two Ethernet interfaces, an integrated Ethernet switch and an I/O bus supporting up to 10 additional S500 I/O modules, the CI504-PNIO can form a scalable remote I/O station. The module supports PROFINET IO RT communication with a minimum bus cycle of 1 ms and can be integrated into modern ABB AC500 control architectures.

Key Advantages

• Dedicated PROFINET IO RT communication interface for decentralised automation.
• Three independent serial interfaces for flexible field-device connectivity.
• Each serial interface supports RS-232, RS-422 and RS-485.
• Configurable serial transmission rates from 300 bit/s to 115,200 bit/s.
• Two Ethernet interfaces with an integrated Ethernet switch.
• Supports connection of up to 10 S500 I/O modules.
• Module-wise galvanic isolation supports electrical separation within the communication architecture.

Key Features

• ABB CI504-PNIO PROFINET IO RT device.
• Three serial interfaces designated COM1, COM2 and COM3.
• Selectable RS-232, RS-422 or RS-485 physical layer for each serial interface.
• ASCII serial communication protocol.
• Configurable serial transmission speed from 300 bit/s to 115,200 bit/s.
• Two Ethernet interfaces, ETH1 and ETH2.
• Integrated Ethernet switch.
• PROFINET IO RT Class 1 communication.
• PROFINET conformance class CC B.
• Minimum PROFINET bus cycle of 1 ms.
• Module-wise galvanic isolation.
• Diagnostic LEDs for serial communication, Ethernet, system and I/O bus status.
• Rotary switches for setting the I/O device identifier.
• Compatible with the TU520-ETH terminal unit.
• DIN rail mounting through the terminal unit.

PROFINET and Serial Connectivity for Industrial Automation

The ABB CI504-PNIO provides a practical bridge between PROFINET-based automation networks and serial field equipment. Three independent serial interfaces allow devices using RS-232, RS-422 or RS-485 to communicate through a PROFINET IO RT network, reducing the need for separate communication gateways.

The module supports standard PROFINET services including cyclic real-time communication, acyclic read and write services, discovery and configuration, link-layer discovery and media redundancy functions. Diagnostic LEDs provide clear status information for the serial interfaces, Ethernet connections, system operation and I/O bus.

The CI504-PNIO can be expanded with up to 10 S500 I/O modules, allowing serial communication and conventional I/O to be combined within a single decentralised station. The module is supported in AC500 V3 systems through the compatible CM579-PNIO communication module.

Typical Applications

• PROFINET remote I/O systems.
• Serial device integration within industrial Ethernet networks.
• RS-232, RS-422 and RS-485 field-device communication.
• Industrial machine control and automation.
• Factory automation and production equipment.
• Instrumentation and serial process devices.
• Decentralised S500 I/O stations.
• AC500 PLC systems requiring PROFINET and serial gateway functionality.