PVS5120-Series Portable Samplers
40
8. Connect the PVS5120CBL cable to the front of the sampler and wire the
cable to the MD485 (TABLE
). Connect the MD485 to the datalogger
using the SC12 cable or the null modem cable.
9. Use
LoggerNet
to connect to the datalogger. The following steps assume a
knowledge of how to setup the datalogger and connect either via a direct
connection or remote connection.
a. From the
LoggerNet Connect
window, click
Connect | Collect Now
to collect any data on the datalogger.
b. From the
Connect
screen, click the
Send New
button. Browse to find
the
CRBasic
program that controls the sampler via PakBus® (see
). Click
Open | Send
.
8.2.4.3 Wiring for PakBus® Control
TABLE 8-4. PakBus® Control Connections (PVS5120CBL-L Cable)
Wire
Description
Connection
Green
SDI-12/Pulse Out
Not used
Blue
Pulse Start
Not used
Purple
Ground
Not used
Gr
e
y
Ground
Connects to one lead of the optional
water detection probe
Yellow
Water Sensor
Connects to one lead on the optional
water detection probe
White
RS-485 A-
MD485 RS-485 A port
Black
RS-485 B+
MD485 RS-485 B port
Red
Fault
Not used
Brown
RG
MD485 RG terminal (
⏚
)
8.2.4.4 Programming for PakBus® Control
PakBus® can be used to control the sampler and to monitor a timed-based or
pulse controlled sampler. When using PakBus®, the datalogger communicates
with the sampler via RS-485. An MD485 multidrop modem is required for this
communication.
In
CRBasic
, the
SendVariables()
or
GetVariables()
instruction initiates the
sample and collects the returned status values. These instructions access the
Public
table stored in the VSC100 controller. TABLE
value, name, and description of the VSC100 Public Table.
The sampler returns four status values regardless of control type after it has
completed the sampling procedure and the distribution arm has advanced as
necessary. These status values are array values 12 through 15 in TABLE
Summary of Contents for PVS5120 Series
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Page 70: ...Appendix A Sample Transport Velocity A 2...
Page 78: ...Appendix B Example Programs B 8...
Page 86: ...Appendix C Monitoring Sampler Status via RS 485 C 8...
Page 96: ...Appendix G Generic Modbus Control G 4...
Page 100: ...Appendix H ISO5667 Conformity H 4...
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