Table of Contents
Advertisement
FX2N-2LC Temperature Control Block
Buffer Memory (BFM) 7
7.2.30
BFM #47 (CH1) and BFM #66 (CH2): Setting the upper limit
BFM #48 (CH1) and BFM #67 (CH2): Setting the lower limit
In BFM #47 and BFM #66, enter the upper range limit of CH1 and CH2 respectively. In BFM
#48 and BFM #67, enter the lower range limit of CH1 and CH2 respectively.
Use these BFMs to set the upper and lower limits for the temperature set value (SV) (BFM #12,
BFM #21). The default range is -100 to +1300 °C.
If the Set Value (SV) temperature is entered that is outside the input range, the "set range
error" flag (BFM #0 b1) turns on.
If an input range value (upper/lower) is entered that is not allowable, the "set range error" flag
(BFM #0 b1) turns on. (The same flag is used for both types of errors.)
When changing the input range values, make sure that the upper and lower limit values are
inside the allowable input range.
The allowable set range for the lower limit is the higher of two values: the default value -100 °C
or the lower limit for the sensor used (values shown on page 7-22). The allowable set range for
the upper limit is the lower of two values: the default setting of +1300 °C or the upper limit for
the sensor used (values shown on page 7-22). The initial value is the default input range (-100
to +1,300 °C.)
7
7-19
Advertisement
Table of Contents
