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.
FCM100E
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