Instruction manual

IMR01H02-E3
5
3. WIRING
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Connection to the RS-422A port of the host computer (master)
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Communication terminal number and signal details
Terminal No. Signal name Symbol
44 Signal ground SG
45 Send data T (A)
46 Send data T (B)
47 Receive data R (A)
48 Receive data R (B)
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Wiring method
Host computer (Master)
RS-422A
$
$
$
Paired wire
MA900/MA901
(Slave)
Shielded twisted
pair wire
Communication terminals
T (B)
T (A)
R (B)
R (A)
SG
Communication terminals
MA900/MA901
(Slave)
Maximum connections: Multi-point mode: 31 instruments (MA900/MA901)
Single mode: 25 instruments (MA900)
12 instruments (MA901)
44
45
46
47
48
SG
T (B)
T (A)
R (B)
R (A)
44
45
46
47
48
SG
T (B)
T (A)
R (B)
R (A)
The cable is provided by the customer.
To prevent electric shock or instrument failure, do not turn on the power until all
the wiring is completed.
WARNING
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