Campbell PVS5120 Series, Инструкция по эксплуатации

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PVS5120-Series Portable Samplers
40
8. Connect the PVS5120CBL cable to the front of the sampler and wire the
cable to the MD485 (TABLE 8-4 ). 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
Section 8.2.4.4 ,
Programming for PakBus®
Control
(p. 40)
). 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 8-5 provides the array
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 8-5 .