30 AMPS-24 Manual — P/N 51907:J2 02/26/2014
Section 3: Configuring the AMPS-24
3.1 SLC Addressing
When the AMPS-24 communicates via the SLC, the installer must reserve sequential SLC
addresses (an address block) equal to the number of addresses that will be consumed by the
AMPS-24. Determining the size of the address block and setting the SLC base address is
described in this section.
3.1.1 Determining Address Consumption
Software determines the AMPS-24 address consumption. An AMPS-24 can occupy either one or
five addresses on an SLC. The AMPS-24 will consume five addresses on the SLC if configured for
five-point trouble reporting. If trouble reporting is not selected, the AMPS-24 will only consume
one address. Table 3.1 details address consumption.
NOTE: An AMPS-24 communicating over the EIA-485 protocol will not require an SLC address
block. See Section 3.3, “Configuring the Network Annunciator” for more information.
CAUTION:
Always select “SLC Trouble Reporting” when connecting the AMPS-24 to an NFS2-3030.
AMPS-24
Addresses
EIA-485 or SLC
Five Point
Trouble Reporting
NOT SELECTED
EIA-485
Trouble Reporting
SELECTED
*
SLC
Trouble Reporting
SELECTED
†
SLC
Address
PK-PPS Setting
“SLC” Interface Type “EIA-485” Interface Type
• “SLC” Interface Type
• “Five-Point Monitoring”
Trouble Reporting
Monitor General
??
B
‡
Monitor AC Fail
?
B + 1
Monitor Battery
?
B + 2
Monitor Earth Fault
?
B + 3
Monitor Charger
Fault
?
B + 4
Total: 1 Address No address when SLC is
disabled.
Total: 5 Addresses
Assign 5 sequential SLC
addresses for this
configuration.
Table 3.1 SLC Address Consumption
* Required for use with NCA-2
† Required for use with NFS2-3030 and when used as a remote power supply.
‡ B = SLC Base Address
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