Basic information
Brand: ABB
Model: P8151B
Category: Communication interface module

Main functions: P8151B module as a communication interface, plays an important role in industrial automation system. It is responsible for handling the data communication within the system or between the system and other devices, ensuring the accurate transmission of information and the stable operation of the system.
Application scenario: The module is widely used in various industrial automation scenarios, such as process control, manufacturing execution systems (MES), monitoring systems, etc. In these scenarios, the P8151B module can be seamlessly integrated with other controllers, sensors and actuators to achieve real-time data acquisition, processing and transmission.

It is not intended that the information in this publication covers every possible detail about the
construction, operation, or maintenance of a control system installation. You should also refer to
your own local (or supplied) system safety manual, installation and operator/maintenance manuals.
REVISION AND UPDATING POLICY
This document is based on information available at the time of its publication. The document
contents are subject to change from time to time. The latest versions of the manuals are available at
the Rockwell Automation Literature Library under “Product Information” information “Critical
Process Control & Safety Systems”.

P8151B Ensure that the module is of the correct type.
Record the module type, revision and serial number of the module before installation.
To install the module:
1. Ensure that the field cable assembly is installed and correctly located.
2. Release the ejector tabs on the module using the release key. Ensure that the ejector
tabs are fully open.
3. Holding the ejectors, carefully insert the module into the intended slot.
4. Push the module fully home by pressing on the top and bottom of the module fascia.
5. Close the module ejectors, ensuring that they click into their locked position.
The module should mount into the chassis with a minimum of resistance. If the module does
not mount easily, do not force it. Remove the module and check it for bent or damaged
pins. If the pins have not been damaged, try reinstalling the module.

P8151B Part Number
Product Name
1 isolated RS232 port
Description
T8153
Communications Interface
Adapter
Provides access to the ports on the CI
T8173
Gateway Adapter
Provides access to the Ethernet ports on the CI
TC-304-01
Maintenance Cable
Connects between CI and Engineering
Workstation PC via front diagnostic port
TC-305-0X
Communications Cable
Provides access to the ports on the CI via
flying leads
T8122 or
T8123
Processor Interface Adapters
Required to implement Modbus Master on the
CI