Technical data

How to Enable a Pressure Probe to Share Across the LAN Pressure Transducer Setup (XM679K Only) • 35
The parameter (Adr) also defines the number of
configurations on the RS485 network (besides the
LAn); its value must be only from 1 to the total num-
ber of devices present on the RS485 and the LAN net-
works.
21.2.How to Enable a
Pressure Probe to
Share Across the LAN
1. Enter the Pr1 level. Follow the steps in Section 3.7.,
How to Enter the Parameters List PR1.
2. Select Pr2 parameter and press the SET key.
3. The PAS flashing message will display, followed
shortly by “0 --” with a flashing zero.
4. Use the UP or DOWN button to input the security
code in the flashing digit. Confirm the security code
by pressing SET. The security code is 321.
5. If the security code is correct, the access to Pr2 is
enabled by pressing SET on the last digit.
6. Navigate to the LPP of the Master device (the de-
vice where the pressure probe is connected) and se-
lect (Y). Set the LPP to (N) for all other slave
devices.
7. Navigate to tPP of the Master device and set it to
PP (Pressure Probe). The slave devices tPP param-
eter will be set to LAn.
8. Navigate to P5C parameter (Pressure Probe will al-
ways be assigned to P5C) of the Master device and
set it to Pressure Probe type. The slave devices P5C
parameter will be set to nP (No Probe).
CAUTION! Do not connect the RS485 cable to
all the instruments that are already connected
on the LAN - only connect the RS485 to the
master device of the LAN.
CAUTION! The same value of the Adr param-
eter in different controllers creates malfunc-
tioning in the monitoring system or problems
on the synchronized defrosts.
NOTE: If pressure is not being shared across
the LAN, each XM679K will need its own Pres-
sure Transducer. Please reference Figure 19-1
and Figure 20-1 wiring diagrams.