Meinberg C28COM - Manual (Page 8)

8
Pin assignment of the 9pin D-SUB
The assignment of the module’s D-SUB connector allows the connection directly to a
RS-232 port of a personal computer. If a longer cable is needed it is possible to
lengthen it by using a 1:1 cable. The maximum length depends on the RS-232-driver
circuit of the computer and can’t be specified generally for this reason.
Pin assignment of the computer’s RS-232 ports
The serial RS-232 ports of a computer are assigned as follows:
1
14
13
25
1
6
5
9
9 - p in D - S U B C o nne c to r 2 5 - p in D - S U B C o nne c to r
P in N a m e D e sc rip tio n P in N a m e D e s c rip tio n
1 C D C a rrie r D e te c t 1 S hie ld S hie ld G ro und
2 R xD R e c e ive D a ta 2 T xD Tra ns mit D a ta
3 T xD Tra ns m it D a ta 3 R xD R e c e ive D a ta
4 D T R D a ta Te rm ina l R e a d y 4 RT S R e q ue s t to S e nd
5 G N D S yste m G ro und 5 C T S C le a r to S e nd
6 D S R D a ta S e t R e a d y 6 D S R D a ta S e t R e a d y
7 RT S R e q ue st to S e nd 7 G N D S ys te m G ro und
8 C T S C le a r to S e nd 8 C D C a rrie r D e te c t
9 R I R ing Ind ic a to r 2 0 D T R D a ta Te rmina l R e a d y
2 2 R I R ing Ind ic a to r