YOKOGAWA UT150L, User Manual

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IM 05C01E22-10E
6-1
Chapter 6 Functions and Usage of I Relays
6. Functions and Usage of I Relays
This chapter explains the functions and usage of the I relays.
The I relays contain information on errors in UT150L controller, as well as the controller’s alarm
statuses. By connecting the UT150L controller to host devices (via PC communication link), you can
read these internal data items from the I relays to use for your own particular purpose. (Note that
most of the I relays have the same functions as the D registers.)
6.1 Status I Relays
The following table summarizes how the on-off status I relays are classified.
I Relay No.
1 to 16, 50, 51
17 to 48
Data Category
Error information (same as data in the D0001
register)
Description
User area (Data can be written to or read from
the range of I relays)
Remarks
On-off
statuses Information stored in each group of these
I relays is represented by the four sets of
binary codes, from 0000 (0 in the
decimal system) to 1000 (8 in the
decimal system), which are formed by
each combination of four I relays. The
lowest-numbered I relay in each set
signifies the LSB of the four bits.
Read/Write
NOTE
The on-off status I relays numbered 1 to 16 store on-off status information. In normal operation, this
area can be accessed to read the on-off status.
When specifying an I relay number via communication, begin the number with an upper-case letter I.
For example, type I0014 to specify the RJCERR.st relay (I relay numbered 14).
No data may be written to or read from data storage areas with blank fields in the tables that follow.
If you attempt to do so, UT150L controller may fail to operate correctly.
4
8
5
7
3
6
2
1
No.
Area of I Relays
I Relay
Name Code
PV+over.st
PV-over.st
BO.st
ALM1.st
ALM2.st
15
16
10
11
12
13
14
No.
9
ADERR.st
EEP.E.st
RJCERR.st
PARA.E.st
CALB.E.st
I Relay
Name Code
SYSTEM.E.st 19
18
21
20
23
24
22
No.
17
UR3
UR2
UR4
UR6
UR5
UR8
UR7
I Relay
Name Code
UR1 27
26
30
29
28
31
32
No.
25
UR11
UR12
UR10
UR13
UR16
UR14
UR15
I Relay
Name Code
UR9
36
39
40
37
38
35
34
No.
33
I Relay
Name Code
UR18
UR19
UR22
UR24
UR23
UR20
UR21
UR17 43
44
45
42
41
46
47
No.
48
UR31
UR26
UR25
I Relay
Name Code
UR32
49
50 EXD
51
52
53
54
55
56
OUT
UR30
UR29
UR28
UR27