CHAPTER 3: SYSTEM INFORMATION
SNAP PAC R-Series Controller User’s Guide
37
37
Connectors and LEDs
The following information applies to all SNAP PAC R-series controllers except
Wired+Wireless models. For details on LED blink codes, see
page 65
.
* Minimum requirements for wiring an RS-232 serial cable to connect to a PC. If you want to connect the
controller to a modem, see
page 13
for all eight pin connections.
Status and Activity LEDs
Indicator
Description
ACT
Ethernet network activity
LNK
Link established with Ethernet network
STAT
Startup status, control program opera-
tional status, MicroSD card access
232
RS-232 serial activity
PPP
PPP status
RS-232 Port (Port 0)
Pin
Description
1
TX
2
RX
3
COM
4
RTS
5
CTS
6
COM
7
DTR
8
DCD
RS-232 Serial Cable Wiring*
PC
DB9
RX
2
TX
3
SIGNAL
GROUND
5
Controller
1
TX
2
RX
3
COM
6
COM
Independent 10/100
Mbps Ethernet interfaces
(RJ-45 connectors)
RS-232 serial
communications
Status and
activity LEDs
Controller
reset button
Ethernet
LEDs
MicroSD
card slot