SYSWAY
4.2 Command Descriptions
4-7
When the alarm 1 type is set to “upper and lower-limit alarm,” “upper
and lower-limit range alarm,” or “upper and lower-limit alarm with
standby sequence,” the alarm’s upper and lower limits are set indepen-
dently. The “alarm value 1" setting is disabled and the “alarm value
upper limit 1” and “alarm value lower limit 1” settings are used as the
alarm set values.
For this reason, when an “upper and lower-limit alarm” is set, write
values are written by communications to “alarm value upper limit 1” and
“alarm value lower limit 1” and not to “alarm value 1.” The same applies
to “alarm value 2.”
● Temperature Input Shift Value
When the 2-point shift method is used, the Temperature Input Shift is
disabled and the Upper Limit Temperature Input Shift Value and Lower
Limit Temperature Input Shift Value parameters are enabled as the
temperature input shift set values. For this reason, write values are
written to the Upper Limit Temperature Input Shift Value and Lower
Limit Temperature Input Shift Value parameters and not to the Temper-
ature Input Shift parameter.
The 2-point shift method will be used in the following cases:
• The Input Type parameter is set to temperature Input, and the Input
Shift Type parameter is set to 2-point shift.
● Alarms
• Even when alarms 1 and 2 are not displayed on the Controller's
display, they function normally in communications.
• Only alarms 1 and 2 are supported.
• Alarm 3 cannot be used.
● Heater Burnout Detection
Written to “heater burnout detection 1.” (The value is not written to
“heater burnout 2 detection.”)
■ Read Set Values and MV Monitor
This command reads the set point, alarm values 1 and 2, proportional
band, integral time, derivative time, temperature input shift values,
heater burnout detection, and MV monitor.
Command
Response
@
FCS
CR
*
Communi-
cations
unit num-
ber
Header
code
Termi-
nator
Data
code
@
FCS
CR
*
Communi-
cations
unit num-
ber
Header
code
Termi-
nator
End
code
Read value
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