Interface - Casio I/O-PB-12 Service Manual

1-3. Interface

1-3-1. C In-line
1) In-line connection diagram
The maximum in-line cable length and the maximum connection unit will be varied by the
in-line communication speed as shown below list.
[In-line cable wiring]
PC
Terminater(100 ohms)
In-line Communication speed
(Band rate)
1.25 M bps
625 K bps
312.5 K bps
156.25 K bps
2) Connection:
3) Terminator:
4) We recommend that PC is a terminal set.
5) If PC is not the terminal set, FG(PC side) should not connect with cable ground.
Then to make 10 cm of cable which is non-terminal resist.
1-3-2. KP In-line
1) BPS speed:
2) Connection:
3) Terminator:
4) We recommend that PC is a terminal set.
5) If PC is not the terminal set, FG(PC side) should not connect with cable ground.
Then to make a 10 cm of non-terminal resistor and to connect it in this case.
6) Dip switch
Total cable length is max. A m
ECR
ECR
Maximum
connection unit
8
12
20
32
Multi drop
100 Ω
1,200bps, 2,400bps,
T branch
Open
— 3 —
ECR
Terminater(100 ohms)
Maximum cable length
A (m)
86
200
430
890
4,800bps, 9,600bps, 19,200bps