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Document 52017 NION-MXL Instruction Manual Rev. A 10/10/02
2.1 Serial Connections with the MXL Control Panel
The NION-MXL must be connected to the EIA-232 port of a Pyrotronics PIM-1 Peripheral Interface Module
installed with the MXL Control panel. Jumper G1 on the PIM-1 module must be closed. For specific connections,
refer to Figure 2-1. EIA-232 settings are: Baud Rate - 9600, Data Bits - 8, Stop Bits - 1, Parity - None.
Figure 2-1: NION-MXL Wiring Diagram
NO2
COM
NC2
NO1
COM
NC1
GND
+24V
GND
+24V
RTS
C T S
COM
R X
T X
1
2
3
4
5
6
7
8
9
+24VDC
Power Supply
TB4
NION-MXL
PIM-1
TB3
MXL Control Panel
-
+
Section 2: NION-MXL Configuration
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2.2 Serial Communication DIP Switch Configuration
The baud rate, parity and data bits of the NION-232B must be equal to those of the RS-232 serial port of the
control panel. The NION-232B settings must be configured in the field for the application it was ordered to fill.
These settings are made on switch S2.
If it becomes necessary to change any of these settings, use the figure below:
NOTE: The above DIP switch settings are for the MXL interface and
correspond to 9600 baud, 8 data bits, 1 stop bit, and no parity.
Figure 2-2: Switch S2 Settings for the NION-232B RS-232 Configuration
NOTE: Use only wire for
power limited systems.
Power limited wire runs
use type FPLR, FPLP, FPL
or equivalent cabling per
NEC 760.
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