Acromag ACC1000, Instruction Manual

Page: 9 / 17

Serial Communication Converters & Adapters
Instruction Manual
9
APMA7232 RS-232 Serial
Adapter
Description
The APMA7232 converts the serial output of the
APM765/VPM3000 meter to an unbalanced, full-duplex
RS-232 signal.
The RS-232 port has a female DB9 connector with pins
2 (RX output), 3 (TX input), and 5 (Signal Ground). Pins
7 (RTS) and 8 (CTS) are tied together, and pins 1 (CD),
4 (DTR), and 6 (DSR) are tied together. The adapter is
powered by the APM765/VPM3000 meter.
Baud rates are adjustable and handled by the
APM765/VPM3000 (see the Instruction Manual for
more details).
The APMA7232 has three diagnostic LEDs: a Power
(P) LED to show when the adapter is powered properly,
a Transmit Data (TX) LED to show when the adapter is
sending data out from the PC side, and a Receive Data
(RX) LED to show when the adapter is receiving data
from the APM765/VPM3000 meter.
Installation
Figure 11 shows the connection of a
APM765/VPM3000 meter to a PC using the APMA7232
serial adapter. The APMA7232 has an RJ11 connector
to connect the APMA7420 modular cable and a PC
compatible 9-pin D subminiature connector (DB9). The
DB9 can be connected directly to the PC or by using a
standard serial extension cable.
Figure 11. RS-232 Adapter Connections
Connections
An APMA7420 cable is provided to connect the
APM765/VPM3000 meter to the APMA7232 serial
adapter.
Figure 12 shows the APMA7420 cable details.
Figure 12. Standard Modular Cable Wiring
APMA7420 Meter Copy Cable
Description
The APMA7420 Meter Copy Cable is used to copy (or
clone) all the settings from one
APM765/VPM3000
meter to other APM765/VPM3000 meters requiring
exactly the same setup and programming (i.e. type of
input, scaling, decimal point, filter, bypass, etc.). The
Copy operation can be completed in less than 10
seconds. The Copy function is a standard feature on all
APM765/VPM3000 meters.
Connections
Connect the two ends of the APMA7420 as shown in
Figure 13 .
Figure 13. Copy Cable Connecting Two Meters
Operation
Refer to the APM765 or VPM3000 manual for
instructions on how to perform the Copy function.
Serial Cable
(Not Provided)
RS-232 Adapter
Modular Cable
(Provided)
(WH) 1
(BK) 2
(R) 3
(G) 4
(Y) 5
(BL) 6
1
2
3
4
5
6