Banner SC22-3E Safety Controller with Ethernet - Manual (Page 9)

2 Overview
NOTE: This section of this document provides a high-level discussion of the Banner models SC22-3 / SC22-3E Safety Controller, to
acquaint the user with the Controller's capabilities and features. For in-depth information about installation, wiring, and use of the
product, refer to later sections.
The Banner models SC22-3 / SC22-3E Safety Controller (the Safety Controller or the Controller) are easy-to-use, configurable, 24V dc
safety modules designed to monitor multiple safety and non-safety input devices and control up to three independent machine primary
control elements (MPCEs). They provide safety stop and start functions for machines with hazardous motion. The Safety Controller can
replace multiple safety relay modules in applications that include such safety input devices as E-stop buttons, gate interlocking switches,
safety light curtains, and other safeguarding devices. It also can be used in place of safety PLCs and other safety logic devices when
they are excessive for the application.
Configurations are created using an Onboard LCD and push-button interface, or using a PC connected to the Safety Controller via a USB
port.
2.1 Ethernet-Compatible Model
The model SC22-3E provides the same features of the SC22-3, and in addition provides the ability to interface to Ethernet (for example
to a PLC or HMI human interface touch panel), using Modbus/TCP or EtherNet/IP™ protocols.
Modbus/TCP is an open standard protocol developed by the Modbus IDA. It is similar to Modbus RTU, except that it uses standard
Internet communication protocols, just like Web communications or email. The master is referred to as the “client,” and the slave is the
“server.” (The SC22-3E is a “server.”) Modbus/TCP follows the same structure as Modbus RTU: clients initiate all communication, servers
can only respond.
EtherNet/IP (EtherNet Industrial Protocol) is an open standard protocol developed by Allen-Bradley, but managed by the ODVA. Ether-
Net/IP is an adaptation of the DeviceNet serial fieldbus protocol, using Internet communications protocols. EtherNet/IP is DeviceNet over
Ethernet. Compatible devices supported are:
• EtherNet/IP connection (using the CIP protocol) to the Allen-Bradley ControlLogix family of PLCs. Both implicit and explicit messaging
is supported.
• EtherNet/IP connection (using the PCCC protocol) to the Allen-Bradley SLC and PLC5 families of PLCs.
• Modbus/TCP connection to any compatible PLCs, HMIs, or devices.
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