Foxboro FCM100E Redundant Fieldbus Communications Module

FCM100E Redundant Fieldbus Communications Module

The Redundant Fieldbus Communications Module (FCM100E) provides the communication interface

between the Z-Module Control Processor 270 (ZCP270), 200 Series Fieldbus Modules (FBMs), 100 Series

FBMs, and Migration products over The MESH control network.

FEATURES

 Redundant modules allow both modules to

control the process. Role reversal is automatic on

detected failures

 Interfaces The MESH control network (100 Mbps)

to the 2 Mbps Module Fieldbus for 200 Series (or

equivalent) FBMs or to the 268 Kbps Fieldbus for

100 Series (or equivalent) FBMs

 Direct multi mode fiber optic connection to The

MESH control network

 Uses soft letterbug configurable via the

I/A Series® Letterbug Configurator

 Harsh (Class G3 - ISA S71.04) contamination

protection

 Monitored by standard I/A Series System

Management displays

 An FCM100E communicates with up to 32

200 Series FBMs or up to 64 100 Series FBMs.

 “CE” logo marked on product.

OVERVIEW

The FCM100E (see Figure 1) communicates via a

high-speed 100 Mbps network to the I/A Series

ZCP270. The FCM100E module interfaces the

2 Mbps module Fieldbus used by the 200 Series (or

equivalent) FBMs or the 268 Kbps Fieldbus used by

the 100 Series (or equivalent) FBMs, to 100 Mbps

Ethernet signals, and vice versa (see Figure 2).

The FCM100E installs in a DIN rail mounted Modular

Baseplate for high speed communication to/from the

FBMs and ZCP270 modules. A pair of FCM100E

modules is installed to provide redundancy at the

Fieldbus Module (FBM) level. Both modules are

always active. In case of a module’s failure, the other

provides backup coverage until the failed module is

returned to service.

Signal transmission distances up to 2 km (1.24 mi)

are possible between FCM100E modules and the

Ethernet switches, providing for wide distribution of

To/From Control Network

Ethernet Fiber Switch 2

the FBM equipment groupings. For more information,

refer to The MESH Control Network Architecture

(PSS 21H-7C2 B3).

A pair of FCM100E modules can be used for each

FBM grouping. An FBM grouping can contain up to

thirty-two 200 Series FBMs or up to sixty-four

100 Series FBMs

Redundant FCM100Es can be connected to The

MESH control network, to a separate 100 Mbps fast

Ethernet network, or directly to a ZCP270.

Each FCM100E module runs on a single fast

Ethernet bus (A or B) only.

NOTE

The FCM100E does not support external

time synchronization and SOE/TDR. These

optional I/A Series components require the

FCM100Et. Refer to PSS 21H-2Y10 B4 for

more information.

FCM100E MODULE DESIGN

FCM100E modules have a compact design, with a

rugged die cast aluminum exterior for physical

protection of the electronics. Enclosures specially

designed for mounting of the FCMs provide various

levels of environmental protection for the FCM100E

modules, up to harsh environments per ISA Standard

S71.04.

The FCM100E can be removed/replaced from the

baseplate without removing power. Light-emitting

diodes (LEDs) incorporated into the front of the

FCM100E indicate module Fieldbus communications

activity and module status.

A single fast Ethernet connection is made between

the FCM100E and the network, as shown in Figure 2.

Both the redundant modules, with single fiber

connections, connect to the network.

HIGH RELIABILITY

The redundancy of the module pair, coupled with the

high coverage of faults, provides very high

subsystem availability time.

Either module may be replaced without upsetting

input or output communications to the other module.

A module can be removed or replaced without

removing power.

MODULAR BASEPLATE MOUNTING

The FCM100E mounts on various types of Modular

Baseplates, which accommodate different quantities

and types of modules: just FCM100Es, or a

combination of FCM100Es and 200 Series FBMs.

The Modular Baseplate is DIN rail mounted. The

Modular Baseplate includes signal connectors for the

FCM100Es, redundant independent dc power

connections, and 2 Mbps module Fieldbus

connections or connections to the 268 Kbps module

Fieldbus using a Fieldbus splitter/terminator.

Redundant modules must be located in an odd slot

and adjacent even slot on the baseplate (positions

1 and 2. 3 and 4. 5 and 6. or 7 and 8).

For more information on the various types of

baseplates in an I/A Series system, refer to DIN Rail

Mounted Modular Baseplates (PSS 21H-2W6 B4).

ETHERNET FIELDBUS COMMUNICATION

The I/A Series architecture uses The MESH control

network with 100 Mbps data communications

between the FCM100Es and ZCP270s (see

Figure 2). Redundant FCM100Es can be connected

to The MESH control network, to a separate

100 Mbps fast Ethernet network or directly to a

ZCP270. The FCM100E transmits/receives

communications on the Ethernet port of the

redundant switched fast Ethernet. The network uses

fiber optic cabling to provide extended distance and

immunity to electromagnetic interfer