3 -12 Manual Mode3 -12 Manual Mode
Operation:
To enable manual control the password PASS should be set with a
value equal to CODE (except CODE=0 ) .
Press key to get (mode select), then use and keys
to obtain (Man ). Then press key for 5 seconds, the unit
now enters the manual mode. The upper display will begin to flash
and the lower display will show or .
indicates control percentage value for heating output and
indicates control percentage value for cooling output. Now you can
use up and down key to adjust the percentage values for the heating
or cooling output. The controller performs open loop control as long
as it stays in manual mode.
To enable manual control the password PASS should be set with a
value
equal to CODE (except CODE=0 ) .
Press
key to get (mode select), then use and keys
to
obtain (Man ). Then press key for 5 seconds, the unit
now
enters the manual mode. The upper display will begin to flash
and
the lower display will show or .
indicates control
percentage value for heating output and
indicates
control percentage value for cooling output. Now you can
use
up and down key to adjust the percentage values for the heating
or
cooling output. The controller performs open loop control as long
as
it stays in manual mode.
To press both and keys , the controller will revert to static
mode and show home display.
To press both and keys , the controller will revert to static
mode
and show home display.
Exit Manaul MadeExit Manaul Made
Two types of interface are available for Data Communication. These are
and interface. Since RS-485 uses a differential architecture to
drive and sense signal instead of a single ended architecture which is used
for RS-232, RS-485 is less sensitive to the noise and suitable for a longer
distance communication. RS-485 can communicate without error over 1 km
distance while RS-232 is not recommended for a distance over 20 meters.
RS-
485 RS-232
Tw o types of interface are available for Data Communication. These are
and interface.
Since RS-485 uses a differential architecture to
drive
and sense signal instead of a single ended architecture which is used
for
RS-232, RS-485 is less sensitive to the noise and suitable for a longer
distance
communication. RS-485 can communicate without error over 1 km
distance
while RS-232 is not recommended for a distance over 20 meters.
RS-
485 RS-232
Using a PC for data communication is the most economic way. The signal
is transmitted and received through the PC communication Port ( generally
RS-232 ). Since a standard PC can't support RS-485 port, a network
adaptor(suchas )hastobeusedtoconvertRS-485to
RS-232 for a PC if RS-485 is required for the data communication. But there
is no need to be sad. Many RS-485 units ( up to 247 units ) can be
connected to one RS-232 port, therefore a PC with 4 comm ports can
communicate with 988 units. It is quite economic.
SNA10A SNA10B,
Using a PC for data communication is the most economic way. The signal
is
transmitted and received through the PC communication Port ( generally
RS-232
). Since a standard PC can't support RS-485 port, a network
adaptor
( such as ) has to be used to convert RS-485 to
RS-232
for a PC if RS-485 is required for the data communication. But there
is
no need to be sad. Many RS-485 units ( up to 247 units ) can be
connected
to one RS-232 port, therefore a PC with 4 comm ports can
communicate
with 988 units. It is quite economic.
SNA10A SNA10B,
3 - 13 Data Communication3 - 13 Data Communication
The controllers support mode of protocol for the data
communication. Other protocols are not available for the series.
RTU Modbus
UM0P411A
62
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