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Note
Caution
Section 2-8
Connec-
i
Signal name Abbrevi-
i
Signal direction
tor pin #
g
ation
Input Output
1 Frame ground FG --- ---
2 Send data SD (TXD) --- Yes
3 Receive data RD (RXD) Yes ---
4 Request to send RS (RTS) --- Yes
5 Clear to send CS (CTS) Yes ---
6 +5V 150mA Max. (ST211(B)-EV )
100mA Max. (ST121(B)-EV )
+5 V --- Yes
9 Signal ground SG (GND) --- ---
1.
FG is not connected internally in the NT600S.
2.
Unlisted pins are not used.
For cable parts and the wiring method, refer to APPENDIX E Method for Making
the Cable for Connection to the PC/Host (page 264).
Connecting to the Host Computer
Use a cable that is compatible with the RS-232C connector of the host to connect
the NT600S and the host.
In the example shown here, the cable connects the 9-pin connector of the NT600S
and 25-pin connector of the host. If the host has a 9-pin RS-232C connector, use
an RS-232C cable with 9-pin connectors at both ends.
NT600S
25-pin
connector
Host Interface connector
(RS-232C, 9-pin type)
9-pin
connector
RS-232C cable
Turn off the NT600S power supply when connecting or disconnecting connec-
tors.
After connecting a communication cable, always secure it with the screws.
Check that thecurrent capacity of the equipment to be supplied is within 150mA
before using the +5V output of pin No.6. Otherwise, the product may malfunc-
tion.
The current capacity of +5 V output of NT600S is:
+5 V 5%, 150 mA max. with ST211(B)-EV , and
+5 V 5%, 100 mA max. with ST121(B)-EV .