Industrial I/O Processors (Brains)
About Opto 22 SNAP I/O Family
SNAP analog modules are designed for harsh environments: all are transformer isolated and optically isolated from the field side to the control side. An isolated input module or output module offers channel-to-channel isolation, too. Each SNAP analog module contains 2 to 32 channels of I/O—software configurable by channel—so a small number of modules can handle a wide range of inputs.
View all Industrial I/O Processors (Brains)
SNAP-B4
A high-performance digital brain used to connect and control up to 32 channels of digital I/O using Opto 22’s SNAP “B Series” I/O mounting racks and the Pamux bus. The SNAP-B4, combined with Opto 22’s AC28 interface card and a host PC, provides the world’s fastest digital I/O.
Capable of communicating over a 50-pin flat ribbon cable (Pamux bus) and can be located up to 500 feet away from the host processor. The Pamux bus has 64 possible addresses. Each group of eight I/O points occupy one address, therefore the Pamux bus can control up to 512 digital and analog I/O points. Each SNAP-B4 brain controls 32 digital I/O points and occupies four consecutive addresses on the Pamux bus.
Power Requirements
5.0 – 5.2 VDC @ 1.0A max.
(If Term1 installed add 0.5A)
Operating Temperature
0 C to 70 °C, 95% humidity, non-condensing
Communications Interface
Pamux Bus; two 50-pin connectors
Range: (Multidrop mode)
Up to 500 feet
LED Indicators
SEL (address selected), WD (watchdog timeout)
Jumpers
- Address (0-3)
- Watchdog Timer Function (4-5)
- Reset Level (6)
- Effect of Reset on Channel 0 Watchdog (7)