YSI 5500D-1 - Manual (Page 32)

YSI 5X00
63
YSI 5X00
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Step 8 Wire Network
Multiple 5X00 and 5200A instruments can be networked using the RS485 network
ports. A node network consists of one master and up to 31 slaves. On a network, the
master is the point of access for the AquaManager PC software program. In addi-
tion, the master sends all serial to ethernet device emails. Communication hardware
(RS232 or serial to ethernet device) is installed on the master instrument (node) only.
RS485 network wiring can span distances up to 4000 feet (1220m). This maximum
distance (4000 ft) is for the total network distance, not the distance between net-
worked units (*see Notes below). RS485 ports are optically isolated for safety, to re-
duce noise, and to help eliminate ground loops. No further isolation is required.
Network traffic refers to the constant communication between the master and all
slaves on the network. Example - slave node 3 is configured to generate an alarm
if the temperature drops below 70°F. The master node is configured to send email
alarms via TCP/IP using the serial to ethernet device. The master node sends an
email alarm when slave node 3 reports a temperature value below 70° F to the master.
AquaManager is a valuable tool for monitoring and controlling node networks.
Notes:
- *Use an RS485 Line Extender/Booster for distances over 4000’ (1220m).
Communication failures may occur without it. Mount the booster in an area
where it is protected from moisture.
- Multiple networks connected to a PC via RS232 require separate PC COM
ports for simultaneous AquaManager mapping and autopolling.
- Legacy 5200s can not be on the same network as 5200As and/or 5X00s. How-
ever, Legacy 5200s can communicate with AquaManager and Legacy 5200 data
will be stored in the same database as 5200A and 5X00 data.
- Network traffic speed operates at ~ 230 KB and is not user selectable.
- Remove network terminal strip from any networked slave that is not powered.
Network rewiring is required if a stub (*see note below) is created when a slave
is taken off the network. See valid network configuration - see figure 3.30.
Note:
- * A stub is created when the last wired network terminal strip is not connected
to a network slave - figure 3.26. (Common lettering references are used for
both 5400 and 5500 models).
master
-represents wired network termination strip
-terminal strips located within master/slave image represent terminal strips that are physically
connected to device
-terminal strips that appear outside slave image represent terminal strips not connected to device
slave slave slave slave
master slave slave slave slave
A stub is created when the last wired network terminal strip is not connected to a network slave.
Network wire stub Network wire stub
this is a stub
(wired terminal
strip is not physically
connected to last
physical slave on
network)
this is not a stub
(wired terminal
strip is physically
connected to last
physical slave on
network)
Figure 3.26
Directions to Wire Network
Network wiring consists of two pair of twisted pair cable plus a communications
com wire. Category 5 ethernet cable is recommended. Network wires are terminated
at location D on I/O Board - figure 3.27. (Common lettering references are used
for both 5400 and 5500 models)
WARNING: Disconnect external power to the unit before wiring.
AVERTISSEMENT : déconnectez l’alimentation externe de l’unité avant d’effectuer
un câblage quelconque.
1. Perform steps 1-4 of 5X00 installation and steps 5 -7 as required for the
application.
2. Open front panel -page 42.
3. Strip five wires to terminate at network termination strip. Use appropri-
ate wire stripper to avoid wire nicks.
4. Feed networking cable through drilled hole in rubber grommet and to
location D. The terminal strip is removable.
Installation and Wiring Installation and Wiring