GE IS220PSCAH1A I/O Block for Serial Modbus Communication

Product Description

The General Electric Serial Modbus Communication Interface Pack IS220PSCAH1A is an I/O block that

It has six configurable serial channels that support multiple ports. The ports used with the IS220PSCAH1A block are RS422. RS485 half-duplex, and RS232 ports.

The IS220PSCAH1A I/O block is used for serial Modbus communication. This kit was designed by General Electric for the Mark VIeS control system.

When the package is used, it provides an interface between up to two input/output Ethernet and a serial communications board.

The board has six individually configurable serial transceiver channels for use with RS485 half-duplex, RS232 and RS422 standards.

The inputs required to supply power to the PSCA block are sent through a three-pin power input and dual RJ45 Ethernet connectors.

There is a serial Modbus master service on the IS220PSCAH1A package with many different functions, some of which are listed below:

RTU Inc.

Data bits: seven, eight

32-bit data word ordering

Parity: even, none, odd

Station address

These functions are used for the six configurable ports on the PSCA block. They can be configured at the port level.

With PSCA, the two Ethernet ports on the block can be used to help support the Ethernet Modbus master protocol; note that this configuration can only occur when used on a simplex network.

The IS220PSCAH1A package has the ability to perform self agnostic tests, one of which is to monitor analogue inputs, the

used to monitor position and pressure to check for configurable high and low levels.

These limits are used to enable and disable functions, lockout/non-lockout, and generate alarms.

The possible alarms are 32-67. 114-119. 108-113. and 72-107.All of these alarms indicate different errors.