Signal Assignment - Hitachi 902 Service Manual

(3) Pin Arrangement
Pin No.
1 SG
2 TXD
3 RXD
4 RTS
5 CTS
6 TXD +
7 TXD -
8 RTS +
9 RTS -
10 CTS +
11 CTS -
12 RXD +
13 RXD -
14
15
(4) Connection Diagram
Current loop
data monitor output
RS-232C
data monitor output
TXD
RXD
EMIO100 board
RTS
CTS
Table 16-26 Signal Assignment
J402 (RDAD-15P female side)
RS-232C (from host)
Current loop (from host)
Unused
Unused
RSDIST board
J405
150 Ω
RTS +
RTS -
150 Ω
TXD +
TXD -
150 Ω
TXD
SG
RTS
TXD
RXD
TXD
CTS
RTS
J409
Fig. 1-16 Connection Diagram
J405 (RDBB-25S female side)
Unused
TXD
Unused
RTS
Unused
Unused
SG
TXD +
TXD -
RTS +
RTS -
DTR +
DTR -
14, 15
RXD
RS-232C/
current loop
RXD +
selection
RXD -
150 Ω
TXD +
TXD -
CTS +
CTS -
RTS +
150 Ω
RTS -
16 - 46
Communication monitor
(RS 232C)
Communication monitor
(current loop)
Unused
J402
Host side
(for RS-232C)
SG
SG
TXD
TXD
RXD
RTS RTS
CTS
CTS
RXD +
RXD -
TXD +
TXD -
CTS +
CTS -
RTS +
RTS -
Host side
(for current loop)