COVID-19 UPDATE: As of Saturday, April 4th our services are ✓ fully operational. We remain committed to providing reliable service to our customers. For a detailed summary of the additional safety measures we have in place, read more.

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COVID-19 UPDATE: Additional safety measures in place

The global outbreak of COVID-19 has created unique and unprecedented operational circumstances for organizations across the world. As of Saturday, April 4th, our services are ✓ fully operational. Our team is currently fully ready and capable of fulfilling orders and otherwise carrying out regular operations.

We remain committed to providing reliable service to our customers while doing everything we can to ensure the safety of our customers, partners, and associates. In accordance with recommendations from the World Health Organization (WHO) and the United States Centers for Disease Control (CDC), we have introduced the following special operational procedures to better ensure the health and safety of our customers, partners, and associates:

  • staff are working remotely, where possible;
  • surfaces throughout our facilities are thoroughly cleaned and sanitized frequently;
  • products are thoroughly cleaned before packaging; and
  • staff working in the office are frequently washing their hands and using sanitizing equipment readily available across our facilities.

We understand that the availability of our products is critical to many organizations and services. As we supply equipment for critical infrastructure services, we do not anticipate a situation where we are unable to continue our regular operation. We will be closely monitoring the situation and keeping our operational status up-to-date here, on our website.

CompactBlock I/O 1791P

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The CompactBlock I/O 1791P series is a series composed of different I/O blocks that have been manufactured and designed by Allen-Bradley. The main units in the series can be mounted on a machine or they can be installed directly in a cabinet. The Allen-Bradley CompactBlock I/O 1791P series is designed to be used in indoor environments, especially within an IP 20 rated enclosure. The blocks of this series include digital I/O and analog I/O, and they come with temperature detection features that are compatible with a wide variety of sensors and that are intended to be installed in confined spaces. When it comes to communications, these blocks are compatible with the DeviceNet and the Profibus DP network technology. These can be connected to different I/O modules through one of these networks.


The Allen-Bradley CompactBlock I/O 1791P series I/O blocks can be used with 3 different expansion modules, 80 points of I/O for DeviceNet networks, and 64 I/O points for the PROFIBUS DP network. The analog blocks support 2 additional modules with 32 points of digital I/O each. These blocks are easy to connect and configure, and these blocks come with a messaging mechanism that increases productivity and makes them able to work with any DeviceNet scanner. The Allen-Bradley CompactBlock I/O 1791P block uses a network protocol called the I/O slaved messaging protocol that includes the poll command, the bit stroke command, and the cyclic and COS command. The whole series has an isolation voltage rating of 50 Volts DC and these blocks require a wire size of 0.25 to 2.5 millimeters square.

CompactBlock I/O 1791P Description Stock Level
1791P-0B16PAllen-Bradley CompactBlock 16 Point Output Base Block for PROFIBUS DP with N/A input, Sourcing output, and 24V DC power...
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1791P-16B0Allen-Bradley CompactBlock 16 Point Output Base Block for PROFIBUS DP with Sinking input, N/A output, and 24V DC power N...
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1791P-4B4PAllen-Bradley CompactBlock 16 Point Output Base Block for PROFIBUS DP with Sourcing input, Sinking output, and 24V DC po...
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1791P-8B8PAllen-Bradley CompactBlock 16 Point Output Base Block for PROFIBUS DP with Sinking input, Sourcing output, and 24V DC po...
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1791P-8V8PAllen-Bradley CompactBlock 16 Point Output Base Block for PROFIBUS DP with Sinking input, Sourcing output, and 24V DC po...
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CompactBlock I/O 1791P Description Stock Level