APPENDIX A: TECHNICAL SPECIFICATIONS
SNAP PAC S-Series User’s Guide
55
55
SNAP-PAC-S2 Connectors, Indicators, and Pinouts
Status and Activity LEDs
Indicator
Description
TX0/RX0
Serial activity on port 0
TX1/RX1
Serial activity on port 1
TX2/RX2
Serial activity on port 2
TX3/RX3
Serial activity on port 3
STAT
Startup status and control
program operational status
ACT
Ethernet network activity
LINK
Link established with
Ethernet network
RS-485 and RS-232 Ports
1
Pin
RS-232
Signal
Direction
RS-485
Signal
Direction
1
TX
Out
TX/RX+
In/Out
2
RX
In
TX/RX–
In/Out
3
COM
2
COM
2
4
RTS
Out
RX+ (4 wire)
In
5
CTS
In
RX- (4 wire)
In
6
DTR
Out
IRQ+
In
7
DCD
In
IRQ–
In
1
CAUTION
:
Do not use communication port connectors from a
legacy OptoControl controller*
. Legacy connectors will fit in a
SNAP-PAC-S2, but the pin orientation is different. Instead, use the
connectors supplied with the SNAP-PAC-S2 controller.
2
Isolated ground. (Each channel is isolated from the others.)
*Legacy OptoControl Controllers:
G4LC32
G4LC32SX
G4LC32ISA
G4LC32ISA-LT
M4
M4IO
M4RTU
SNAP-LCM4
SNAP-LCSX/PLUS
Independent 10/100 Mbps Ethernet
interfaces (RJ-45 connectors)
8–32 VDC input power
(pluggable 3-pin connector)
Ports 0 - 3 are each software
configurable as either
RS-232 (TX, RX, COM, DTR,
DCD RTS, CTS), or
RS-485 (2-wire, 4-wire,
optional termination,
optional biasing). Configure
ports in PAC Manager.
Controller reset button
STAT LED
Activity LED (Yellow)
Link LED (Green)
Serial activity LEDs
Serial activity LEDs
MicroSD card slot
