Omron E5AF, Operation Manual

Page: 29 / 82

!
•
FCS: Exclusive-OR from @ to the last character in the text.
3--5--4 Precautions
When reading or writing various types of numeric data, take decimal posi-
tions into account. All data is expressed in four digits.
It is necessary to take decimals into account in the following cases:
•
Proportional band
•
Output value
•
Main setting, alarm value, process temperature, and set limit value when Pt
100
0
is selected.
•
Fuzzy scale 1 and fuzzy scale 2.
•
Heater burnout alarm value and heater current value for the E5AF/E5EF-
AH
=
and E5EF-BAH.
Example 1: When a Pt 100
0
is selected as an input and the main setting
is 20
A
C, the data becomes 0200.
Example 2: A main setting of --15
A
C is expressed as F015. When a Pt
100
0
is selected as input, a main setting of --10.5
A
C is ex-
pressed as F105.
After sending a command, a response is returned. Check the contents of the
response and process it on the host computer.
The system cannot operate when the E5AF detects overflow, underflow, or
A/D error. Write a program which checks the status data.
When a communications input is executed in ordinary BASIC, the computer
waits for an input and cannot operate without it. Write a program which can
confirm that communications are not taking place when, for example, the
E5AF is not powered up.
When errors are suspected to have been caused by noise, try executing
communications repeatedly (approximately 10 times) until the E5AF/E5EF
returns to the normal operating condition.
Section 3--5