Casio EX-I/O-PB-12, Service Manual

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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]
Total cable length is max. A m
ECR PC
ECR ECR
Terminater(100 ohms)
Terminater(100 ohms)
In-line Communication speed Maximum Maximum cable length
(Band rate) connection unit A (m)
1.25 M bps 8 86
625 K bps 12 200
312.5 K bps 20 430
156.25 K bps 32 890
2) Connection: Multi drop
3) Terminator: 100
Ω
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: 1,200bps, 2,400bps, 4,800bps, 9,600bps, 19,200bps
2) Connection: T branch
3) Terminator: Open
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