6.3
95-8714
54
SETTING NETWORK ADDRESSES
Overview of Network Addresses
Each
LS2000
IR gas detector on the EQP LON must be assigned a unique address. Addresses 1 to 4
are reserved for the EQP controller. Valid addresses for field devices including
LS2000
gas detectors
are from 5 to 250.
IMPORTANT
If the address is set to zero or an address above 250, the system will ignore the switch setting
and the device.
IMPORTANT
The LS2000 sets the LON address only when power is applied to the device. Therefore, it is
important to set the switches
before
applying power. If an address is ever changed, system
power must be cycled before the new address will take effect.
The LON address is programmed by setting rocker switches on an 8 switch “DIP Switch” located
within the
LS2000
housing. The address number is binary encoded with each switch having a specific
binary value with switch 1 being the LSB (Least Significant Bit). (See Figure G-1.) The device’s LON
address is equal to the added value of all closed rocker switches. All “Open” switches are ignored.
Example:
for node No. 5, close rocker switches 1 and 3 (binary values 1 + 4); for node No. 25, close
rocker switches 1, 4, and 5 (binary values 1 + 8 + 16).
NOTE
For convenience in setting LON address switches, a “Rocker Switch Table” is included in the
EQP System manual (form 95-8533).
Do not assign duplicated addresses. Duplicated addresses are not automatically detected. Modules given
the same address will use the number given and report to the controller using that address. The status
word will show the latest update, which could be from any of the reporting modules using that address.
After setting address switches, record the address number and device type on the “Address Identification
Chart” (form 95-8487). Post the chart in a convenient location near the Controller for future reference.
1
2
3
4
5
6
7
8
1
2
4
8 16 32 64 128
ON
NODE ADDRESS EQUALS THE ADDED VALUE
OF ALL CLOSED ROCKER SWITCHES
A2190
BINARY
VALUE
CLOSED = ON
OPEN = OFF
Figure G-1—
LS2000
Address Switches