Foxboro FCM2F2 P0914YZ New Field Control Processor

Description

The three versions, FCM2F2 (RH914YZ), FCM2F4 (RH917JA), and FCM2F10 (RH916TQ), offer nominally maximum baseplate-to-baseplate fiber optic cabling distances: up to 2 km (1.24 mi), up to 4 km (2.48 mi), and up to 10 km (6.21 mi), respectively.

Fiber optic cabling used in these module Fieldbus connections is purchased by the customer. The required fiber optic cable for FCM2F2 (RH914YZ) and FCM2F4 (RH917JA) connections is a multimode, graded-index glass fiber with a 62.5 micron core and 125 micron cladding, with 0.275 NA (numerical aperture). Maximum allowable signal loss is 1 dB per km at a wavelength of 1300 nm, and 3.6 dB per km at a wavelength of 850 nm.

The cables must be terminated with ST-type connectors. Cables with different characteristics may not be used. The required cable for the FCM2F10 (RH916TQ) connection is standard, single-mode fiber cable with ST-type connectors. Other cable requirements (such as flexibility, or durability) depend on the particular application. Check with your cable vendor/installer for a listing of application-specific cable characteristics.

Currently, PLC manufacturers have successively launched some intelligent input/output modules. The general intelligent input/output module itself comes with a processor, which can perform predetermined processing on input or output signals and send the processing results to the CPU or directly output, which can improve the processing speed of the PLC and save memory capacity.

Intelligent input/output modules include high-speed counters (which can be used for addition or subtraction counting), cam simulators (used as absolute encoding inputs), cam simulators with speed compensation, single or multi loop PID regulators, ASCII/BASIC processors, RS-232C/422 interface modules, etc. Table 3 summarizes the general rules for selecting I/O modules.