107
Wiring Section 3-3
Note 1. The maximum cable length for RS-232C is 15 m. The RS-232C standard,
however, does not cover baud rates above 19.2 Kbps. Refer to the manual
for the device being connected to confirm support.
2. The combined cable length for RS-422A/485 is 500 m including branch
lines.
3. The maximum cable length is limited to 2 m when an NT-AL001-E Link
Adapter is connected.
4. Branch lines must be a maximum of 10 m long.
RS-422A/
485
1:1
RS-422A/
485
1:N
Port Configu-
ration
Schematic diagram
RS-422A/485
RS-232C
interface
RS-422A/485
interface
NT-AL001-E
RS-232C
Resistance ON
5-V power
RS-422A/485
RS-422A/485
RS-422A/485
Resistance ON
B500-AL001-E
Resistance
ON
Resistance
ON
Resistance ON
NT-AL001-E
RS-232C
RS-232C
RS-232C
Resistance ON
5-V power
Resistance
ON
RS-422A/485
RS-232C
interface
RS-422A/485
interface
RS-422A/485
interface
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