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4.
SElTlNGS AND PROCEDURES BEFORE OPERATION
MELSEC-A
4.4
Loading and Installation
4.4.1
Handling instructions
Except for the screw tightening torque range specified below, follow the in-
structions given in the corresponding section in the AJ71C24-S8 User's
Manual. (Only instruction (4) in the AJ71C24-S8 User's Manual is changed
as follows.)
4.4.2
Installation environment
(4) Tighten the module mounting screws (optional) and the terminal screws
with the torques specified in the following table.
The environmental conditions are as specified in the corresponding section
in the AJ71C24-S8 User's Manual.
Screw
RS-4221485
terminal block terminal
screws
(M3.5)
Module mountinq screws (optional)
(M4)
4.5
External Wiring
Tightening Torque Range
N a n (kgxrn) [Ib.inch]
58 to
88 (6
to
9) [5.2
to
7.791
78
to
118
(8 to 12)
16.93
to
10.391
4.5.1
Precautions during wiring
The precautions are as described in the corresponding section in the
AJ71C2448 User's Manual, however, put the "M3.5 screw" in the place of
the "M4 screw".
4.5.2
Connecting the RS-232C connectors
The precautions and the connections are as described in the correspond-
ing section in the AJ71C24-S8 User's Manual. (The following is added as
"POINT" to (2)(a) in the manual.)
The CD terminal signal of the AJ71UC24 is treated in different ways i n
full-duplex and half-duplex transmissions. (See Section 3.2.2.)
Set the AJ71UC24 CD terminal signal on the computer as follows:
.
For full-duplex transmission
. .
.Turn ON the signal in both send and re-
ceive data (at all times).
(See Section 3.2.2.)
I .
For half-duplex transmission . . .Turn ON the signal only i n send data.
(See Chapter 5.)
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