5-7
PC-510 user’s manual
Serial ports
The PC-510 requires an RS-232 null modem cable to interface to your
desktop PC.
Figure 5-1
Null modem adapter and VTC-20F cable
Null Modem Adapter
VTC-20F Cable
P2
P3
P1
RS–232 Null modem cable
Building your own cable
If you are not using a VTC-20F series cable, then you can build your
own RS-232 communications cable. This is a simple null modem cable
where RxD and TxD signal are crossed. Cable pins 4 and 6 in the first
COM port connector of the PC-510 are tied together, and cable pins 14
and 16 in the second COM port connector of the PC-510 are tied to-
gether. Pins 7 and 8 are tied together on each DB-9 cable connector.
Pins 4 and 5 are tied together on each DB-25 cable connector. Refer to
the following table and diagram for a complete listing of all cable con-
nections for the PC-510.
Table 5-12
Custom RS-232 null modem cable for the PC-510: First COM port
COM1, COM2 or
COM3, COM4 or
COM5, COM6
serial port
signal
DB-9 pin
DB-25 pin
PC port
signal
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Summary of Contents for PC-510
Page 7: ...Notice to user PC 510 user s manual ...
Page 17: ...xii Contents PC 510 user s manual ...
Page 23: ...About this manual PC 510 user s manual ...
Page 25: ...Overview of Section 1 PC 510 user s manual ...
Page 35: ...2 2 Quick start PC 510 user s manual Figure 2 1 PC 510 component diagram ...
Page 45: ...2 12 Quick start PC 510 user s manual ...
Page 55: ...3 10 SETUP programs PC 510 user s manual ...
Page 59: ...4 4 Save and run programs PC 510 user s manual ...
Page 61: ...Overview of Section 2 PC 510 user s manual ...
Page 73: ...5 12 Serial ports PC 510 user s manual ...
Page 77: ...6 4 LPT1 parallel port PC 510 user s manual ...
Page 83: ...7 6 Console devices PC 510 user s manual ...
Page 119: ...13 8 CRTs and flat panels PC 510 user s manual ...
Page 123: ...14 4 GPS interface PC 510 user s manual ...
Page 125: ...15 2 PC 104 expansion PC 510 user s manual ...
Page 127: ...Overview of Section 3 PC 510 user s manual ...
Page 131: ...16 4 Watchdog timer and hardware reset PC 510 user s manual ...
Page 147: ...18 8 Transferring files remote disks PC 510 user s manual ...
Page 177: ...21 22 CPU power management PC 510 user s manual ...
Page 181: ...22 4 Troubleshooting PC 510 user s manual ...
Page 183: ...Overview of Section 4 PC 510 user s manual ...
Page 203: ...A 20 Technical data PC 510 user s manual ...
Page 231: ...B 28 Software utilities PC 510 user s manual ...