J-3 August 199976-100016-001
Intelligent Suppression Control/Fire Alarm System
PEGAsys
membrane keypad. In addition, the menu provides the ability to
add or remove individual or groups of nodes to/from the net-
work. The additions to the PEGAsys menu structure are dia-
gramed in Figure J-2.
J-2.3 Configuring Networking Options via PCS
Configuration of all CCM parameters, including network param-
eters, can be accomplished using PCS. The software will ini-
tially use default values, with networking Style set to “None”
until changed by an operator.
See the PEGAsys Configuration Software (PCS) Program User's
Guide (76-014) for details.
J-2.4 Configuring Networking Options
via a “Dumb Terminal”
Control panel configuration can be performed through use of
the system menus using a “dumb terminal” attached to the se-
rial “PC Port.” The software will initially use default values, with
networking style set to “None” until changed by an operator.
NOTE: Menus cannot be accessed with an alarm
condition in effect.
J-3 OPERATION
Networked PEGAsys panels may be configured to communi-
cate differently depending on
• Whether they are assigned to network group 0 or to groups
1 through 32,
• Whether they are communicating with other
panels in their local group,
• Or with panels in a remote group.
Table J-1 sets forth these relationships. In more detail, how-
ever:
• A node which receives the network message from another
node in the same non-zero group, will process the network
message appropriately, depending on its own installed pro-
gram. The ACKNOWLEDGE function will be automatic, the
SILENCE and RESET functions must be enabled in PE-
GAsys Configuration Software (PCS), or by using the
panel’s membrane keypad and LCD display panel.
• A node in a different non-zero network group configured to
log all groups will process network message(s) from any
node in the entire network, depending on its own installed
program. ACKNOWLEDGE is automatic, however SI-
LENCE and RESET functions must be enabled in PEGA-
sys Configuration Software (PCS), or by using the panel’s
membrane keypad and LCD display panel.
• A node in network group zero, the default group, will not be
recognized by any other nodes in network group zero for
functions other than receiving messages unless it is con-
figured to log all groups in PEGAsys Configuration Soft-
ware (PCS).
Refer to Table J-1 for a summary of these relationships.
• Nodes can be added or deleted from network only via Net-
work Menu.
J-4 FUNCTIONAL DESCRIPTION
This section describes the hardware used to implement the
PEGAsys Network:
• Central Control Module (CCM) CPU Board
• Network Interface Card (NIC)
• Network Wiring
J-4.1 Central Control Module CPU Board
The CCM board is a slightly modified version of the original
CPU board designed so that the NIC will plug in as a daughter
board. This modification has no effect on normal operation of
the PEGAsys panel or system.
J-4.2 Network Interface Card (NIC)
The NIC contains the hardware necessary for data-communi-
cation between network nodes. The channel is an EIA-485 bus
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Table J-1. Network Configuration Table
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