GE 90-30 PLC Series Installation And Hardware Manual page 317

12
System Design and Layout
(1,219 meters). FIP networks are rated for 1,640 feet (500 meters). Modules with serial ports
communicating via modems and telephone lines or satellite links can cover unlimited
distances.
High speed inputs - The IC693APU300 High Speed Counter can be used with encoders to
count high speed pulse trains. The IC693APU305 I/O Processor module is an intelligent
module that can satisfy high speed input and output requirements independent of the PLC scan.
Motion needs - The IC693APM301/302, IC693DSM302, and IC693DSM314 motion control
modules work with servo motor controllers and other motion devices. The IC693APU300
High Speed Counter module counts high speed pulses from encoders for use in measuring
motion-related data.
Temperature control - The IC693TCM302 Temperature Control Module (TCM) has
thermocouple inputs and PWM outputs.
Extended features - Where there are two or more Option module choices for a particular
application, often an extended feature requirement determines which one to choose. For
example, there are two Ethernet choices, the IC693CMM321 and the IC693CPU364, but only
the IC693CPU364 has Ethernet Global Data (EGD) capability.
Remote or distributed I/O needs - One distributed I/O solution is the use of GE's
Genius Blocks, which can be mounted at the point of use and connected with a PLC's Genius
Bus Controller (GBC) module via a twisted-pair cable. The GBC is the only Series 90-30
module that can control Genius Blocks. Other modules (GCM, GCM+) can read input data
broadcast by Genius Blocks, but cannot send commands to them. By selecting the applicable
bus interface unit (BIU), you can use GE Field Control distributed I/O to interface to
Series 90-30 WorldFIP, Profibus, and Genius buses.
State Logic - These products allow "Natural Language programming" as an alternative to
ladder logic. This makes program creation, documenting, and editing easier for those not
trained in ladder logic programming. Industries that are required by law to thoroughly
document any changes to their system find State Logic to be especially useful.
Cost – In the case where either of two modules are capable of filling a need, an Option module
choice can be made based on the basis of cost.
Performance - Higher data transfer rate or amount of data often dictates which Option module
is used. For example, the IC693CMM302 Enhanced Genius Communications Module can
transmit and receive many times more data than the IC693CMM301 Genius Communications
Module, and it transfers data to the PLC CPU at a faster rate. A comparison table for these
two modules is found in Appendix A of GFK-0695.
Standardization - Sometimes a company standardizes on particular types of modules to
simplify training or stocking of spare parts.
Display requirements - Several options are available for interfacing with GE
Human-Machine Interface (HMI) devices. For details, see the GE web site,
http://www.ge-ip.com
Third-party solutions - Many automation solutions are created by combining GE
products with third-party products. Examples of third-party Series 90-30 modules are
Profibus, DeviceNet, SDS, LonWorks, Interbus-S, RTU/Modbus, ASCII Basic, RTD, and
Millivolt/Strain Gauge Input. Contact your GE distributor for further information, or
check the GE Web site for third-party product information.
GFK-0356Q Chapter 12 System Design 12-3