Table 12.5 Definitions Of Signal Lines - Fujitsu GP 7000F Manual

Table 12.5
Signal
names and Voltage levels
pin Nos.on
the host
side
(DSUB25P) '0'-off '1'-on
(*1)
SD: 2 +8 V -8 V
RD: 3 +8 V -8 V
RS: 4 -8 V +8 V
RS: 4 -8 V +8 V
CS: 5 -8 V +8 V
ER: 20 -8 V +8 V
DR: 6 -8 V +8 V
CD: 8 -8 V +8 V
ST1:24 +8 V -8 V
ST2:15 +8 V -8 V
RT: 17 +8 V -8 V
SG: 7 --
*1
Indicates the data signal logic or ON/OFF of the control line.
*2
Indicates the pin numbers short-circuited on the TERMINAL side connector.
Definitions of Signal Lines
Description
(*1)
GP transmitting data signals
GP receiving data signals
Transmission request signal
when the GP transmits the data
Transmission request signal
Request to transmit when the
I/O device sends out the data
Status signal to indicate
whether or not the host is
ready for operation
Status signal to indicate
whether or not the I/O device
is ready for operation
Indicates that the I/O device
receives the signal from the
connected system normally
Reception timing for the I/O
device to be supplied with the
data from the GP
Transmission timing for the
I/O device to supply the GP
host with the data
Transmission timing for the
I/O device to supply the GP
host with the data
-- Used as a signal return line.
12.2 RS232C Interface
Pin Nos. on the
I/O device side
TERMINAL-25P
3
2
5
5
4
6
20
5-8(*2)
24
15
17
7
149