Hardware Installation
CP 523
Zero modem operation: Connecting two DTEs taking the CP 523 to CP 523 example
Figure 3-12. Zero Modem Operation Taking the CP 523 to CP 523 as Example
a a a a a a a
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a a a a a a a
a a a a a a a
(11)
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V.24 -TXD
Shield
(24/25)
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a a a a a a a a a a a a
(2/21/23)
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GND
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a a a a a a a
CTS
(9)
(7)
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DSR
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a a a a a a a a a
DTR
a a a a a
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a a a a a
a a a a a
(15)
a a a a a
a a a a a
a a a a a
a a a a a
(5)
Shield
(24/25)
GND
(2/21/23)
RTS
(13)
CTS
(9)
DTR
(15)
(11)
V.24 -TXD
DSR
(7)
V.24 -RXD (5)
CP 523
CP 523
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V.24 - RXD
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(13)
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RTS
Connecting a DTE to a DCE taking the CP 523 to modem (SIEMENS 2425 B DX) as example
Figure 3-13. Pin Assignments for CP 523 to Modem
GND
(7)
GND
(2)
(6)
Modem DSR
DSR
(7)
(20)
Modem DTR
DTR
(15)
CTS
(9)
(5)
Modem CTS
Modem RTS
(4)
RTS
(13)
(2)
Modem TXD
V.24 -TXD (11)
(3)
Modem RXD
V.24 -RXD (5)
Modem
CP 523
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Shield
(1)
(1) Shield
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Shield
(8)
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Note:
Only relevant in the case of communications using an RS-232-C (V.24) interface!
The ”3964(R) communications mode” data transmission procedure does not support control
lines (DSR, DTR, CTS, RTS).
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3-12
EWA 4NEB 811 6044-02a