C2K User’s Guide
6-9
Transition Module C2K-TM
6.4.6 Serial RS-422/485—COM1–COM8 (P1–P8)
The C2K-TM provides eight on-board 2 x 5-pin headers to access RS-422 and/or RS-485 serial
ports COM1 (P1) through COM8 (P8). The pin assignment listed in Table 6-8 applies to all eight
COM port connectors.
6.4.7 Serial RS-232—COM3, COM4 (P9, P10)
The C2K-TM provides two on-board 2 x 5-pin headers to access the RS-232 serial ports COM3
(P10) and COM4 (P9). The pin assignment listed in Table 6-9 applies to both COM port headers.
6.4.8 BATT+ Header (P13)
The C2K-TM provides an on-board 2 x 5-pin header (P13) for the BATT+ line. A +3.3V supply
can be connected to the BATT+ header to provide power to the NVRAM/RTC device as a battery
backup when the C2K is not powered-on but still installed in a chassis slot.
Table 6-8
COM1 (P1) through COM8 (P8) pin assignments
Pin
Assignment
Pin
Assignment
1
COMx_TXD-
2
C
3
COMx_TXC-
4
C
5
COMx_RXC-
6
C
7
C
8
COMx_RXD-
9
SGND
10
n/c
Table 6-9
COM3 (P9) and COM4 (P10) pin assignments
Pin
Assignment
Pin
Assignment
1
n/c
2
n/c
3
COM3/4_RXD
4
n/c
5
COM3/4_TXD
6
n/c
7
n/c
8
n/c
9
GND
Table 6-10
BATT+ header (P13) pin assignment
Pin
Assignment
Pin
Assignment
1
n/c
2
BATT+
3
n/c
4
n/c
5
GND
6
n/c
7
n/c
8
n/c
9
n/c
10
n/c
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com