CHAPTER 12 External Interfaces
Connection of signal lines
Figure 12.2 shows a configuration of signal line on connecting DCE device.
Controller/ adapter (DTE)
SD | [Send Data] |
RD | [Receive Data] |
RS | [Request to Send] |
CS | [Clear to Send] |
ER | [Equipment Ready] |
DR | [Data set Ready] |
CD | [Carrier Detect] |
ST1 | [Send Timing 1] |
ST2 | [Send Timing 2] |
RT | [Receive Timing] |
SG | [Signal Ground] |
I/O Device (DTE)
Figure 12.2 Configuration of Signal Line when Connecting DCE Device(Example)
The configuration of the signal line on connecting DTE device is shown below.
Main cabinet side | I/O device side |
SD | SD |
RD | RD |
ERER
DRDR
RSRS
CSCS
CDCD
ST1ST1
ST2 | ST2 |
RTRT
SG 
SG
Note:
RS/CS flow control cannot be achieved by this wiring
