IC697BEM733 Remote I/O Scanner Controller

Description

The IC697BEM733 is a communication interface module from the Series 90-7 Programmable Logic Controller (PLC) Series, produced formerly by GE Fanuc now under Emerson Automation. This module is specifically a Remote I/O scanner, primarily used to implement distributed I/O architecture. This module allows the installation of remote I/O stations which can be located up to 7500 feet or 2275 meters from the host controller. It can be configured to handle any combination of discrete I/O and analog I/O up to a maximum quantity of 1024 Discrete inputs, 1024 Discrete outputs, 64 Analog input words, and 64 analog output words. A remote I/O station that is being communicated with the IC697BEM733 Remote I/O scanner module may contain instances of IC697 discrete modules, analog modules, and analog expander modules. Bus Transmitter, Bus Receiver, PCM, and ADS modules. This module is recommended for use with IC697 modules however, IC66* modules, 3rd party PLCs, and computers installed with Remote I/O communication cards may be used with the IC697BEM733 module.

The IC697BEM733 has One 15-pin RS-422/485 compatible serial port, and One (1) 9-pin IC66* Hand-held Monitor port. It also has dedicated IC66* Bus terminals which supports redundancy. This module is compatible for use with version 4.0 or later Hand Held Monitor with catalog number IC660HHM501G; CPU firmware release 2.0 or later, MS-DOS programming software release 3.0 or later, Bus Controller release 3.0 or later if used with an IC697 PLC modules; CPU rev. 105 or later, MS-DOS programming software release 4.02 or later, Bus Controllers with catalog number IC660CBB902 or 903 must be version 1.7 or later if used with IC600 PLC system; CPU rev. 4.0 or later, MS-DOS programming software release 2.01 or later, any version Bus Controller if used with IC655 PLC. For computer communication, it must be installed with PCIM or QBIM card.

The IC697BEM733 Series 90-70 Genius Remote I/O Scanner Module from the GE Fanuc system. This module is installed on a remote IC697 PLC rack, and it provides an interface between the IC697 I/O modules and the IC66 Bus. Although the IC697BEM733 Module is designed for the IC697 system, it is also compatible with every IC66 host, including the IC660 Programmable Logic Controllers, IC655 Programmable Logic Controllers, and host computers fitted with a Personal Computer Interface Module (PCIM), a Q-bus Interface Module (QBIM), or other third-party GENI-based interfaces. The IC697BEM733 Module can support a mix of IC697 analog/discrete modules with up to 1024 discrete I/O or 64 analog I/O, and PCM and ADS devices. It also supports Bus transmitters, PCMs, ADS, and analog expander modules.

Network redundancy
There are at least two networks in the DCS control system, one is the communication network between the management and control layers, and the other is the 485 communication network between the process control layer and the underlying I/O card layer. The main function of the upper layer network is to achieve real-time detection of the control layer by the management layer and configuration settings for the lower layer controllers. The lower level network is used to transmit the data collected by the I/O card to the process control layer, and then transmit the control data from the control layer to the I/O card. The importance of these two networks in the DCS control system is self-evident.
In response to the redundancy of upper layer network modules, various industrial Ethernet switches supporting link redundancy have emerged in the field of industrial automation today, which solve the problem of network paralysis caused by node failures. To improve the overall reliability and fault tolerance of data communication, this DCS control system also adopts a circular network topology.

However, due to the inherent disadvantage of the ring network itself, which is node failure causing network wide failures, redundant technology for data communication links has emerged. To ensure the smooth operation of the two-layer network, both networks adopt a 1:1 redundancy setting. When the distributed processing unit detects a fault in the main network, it automatically gives up communication from the port of the main network and enables the port of the redundant network to transmit and receive data from the redundant network. At this point, the redundant network enters a data communication state, and the main network is repaired in a timely manner. The dual ring network technology achieves redundancy of transmission media, further improving the reliability of the system on the basis of TurboRing. However, the management and switching of dual ring networks are relatively complex, and this system adopts a simple method.

For each node on the network, it may be in one of the following 5 situations:
(1) Online networking operation, with at least 2 nodes running in the system;
(2) Online standalone operation, with only local nodes running the system;
(3) Offline standalone operation, the network card of this node exists and is normal, but it is not connected to the internet;
(4) Offline standalone operation, the network card of this node exists but fails;
(5) Offline standalone operation, there is no network card present on this node.