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Section 2 – Getting Started
2.1 Installation & Removal
2.1.1 Installation – A2S Version
i)
Locate in a vacant I/O position, preferably adjacent to the Comms Link
module (A1SJ71C24-R2/A1SJ71UC24-R2/A1SJ71QC24-R2).
ii)
Insert the module mounting-hook into the slot below the chosen I/O position
on the A1S Base and push the top of the module forward until fully located.
iii)
Secure the module with the retained mounting screw at the top.
NOTE: Installing the A2S-MODEM on the backplane does not connect to the Bus or
take power or occupy I/O addresses. To avoid loosing any I/O addresses, assign "S0",
under Parameters in the PLC software, for that slot.
2.2.2 Removal – A2S Version
i)
Unscrew mounting screw then tilt the module backwards against the
mounting hook until clear of the A1S Base connector.
ii)
Lift upwards and remove the module hook clear of the slot.
2.1.3 Installation – DIN Version
i)
Locate the top of the DIN rail clip onto the DIN rail and push the module
down until the clip is secure.
2.1.4 Removal –DIN Version
i)
Lever the bottom of the module upwards until the clip releases and un-hook
from the top.
2.2 Connection and Wiring
2.2.1 Connection to a Link module (eg. A1SJ71C24-R2)
AnS/QnS/A via C24 (R2)
i)
Connect the 9-pin to 9-pin cable type (MODEM-R2-CAB), between the
Data RS232 port on the front of the DIN-MODEM-2 or A2S-MODEM and
to the RS232 connector on the front of the A1SJ71C24-R2 link module.
ii)
Connect the telephone lead provided by plugging in the RJ11 type plug into
the socket labelled LINE, making sure that the connector is properly latched.
iii)
When simultaneous voice and data is required, connect a suitable handset or
headset by plugging into the socket labelled VOICE.
iv)
Connect a 24V or 12V dc supply via the connector provided. The dc
polarity is not important as it is corrected within the MODEM.
Modem- A2S
MODEM-R2-
DATA
RS232
VOIC E
LIN E
3
RD
SD
CD
TR
CS
OH
24V
OV
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