LG GLOFA 34F - RD2A, User Manual, Page: 35 / 60

Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS
6 - 1
Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS
The RTD input module a PLC CPU and buffer memories for data communications.
6.1 Buffer Memory Configuration
The followings describe buffer memory configuration.
6.1.1 G3F-RD3A Buffer Memory
Address
(Decimal)
Function Descriptions
Default
Setting Read /
Write
0 Channel enable/disable specification Bit On(1):enable, Bit Off(0):disable disable R/W
1 Channel 0 Specifying RTD type “
2 Channel 1 Specifying RTD type “
3 Channel 2 Specifying RTD type “
4 Channel 3 Specifying RTD type “
5 Channel 4 Specifying RTD type “
6 Channel 5 Specifying RTD type “
7 Channel 6 Specifying RTD type “
8 Channel 7 Specifying RTD type
0 : Pt 100
1: JPt 100
“0”
(Pt 100)
“
9 Detected temp. value of channel 0 Read only
10 Digital conversion value of channel 0 “
11 Error code of channel 0 “
12 Detected temp. value of channel 1 “
13 Digital conversion value of channel 1 “
14 Error code of channel 1 “
15 Detected temp. value of channel 2 “
16 Digital conversion value of channel 2 “
17 Error code of channel 2 “
18 Detected temp. value of channel 3 “
19 Digital conversion value of channel 3 “
20 Error code of channel 3 “
21 Detected temp. value of channel 4 “
22 Digital conversion value of channel 4 “
23 Error code of channel 4 “
24 Detected temp. value of channel 5 “
25 Digital conversion value of channel 5 “
26 Error code of channel 5 “
27 Detected temp. value of channel 6 “
28 Digital conv ersion value of channel 6 “
29 Error code of channel 6 “
30 Detected temp. value of channel 7 “
31 Digital conversion value of channel 7 “
32 Error code of channel 7
Detected temperature value
: A value of 10 times of the
real temperature is read.
Digital conversion value
: (Detected temperature value
+ 2000) X 2
When the detected value of temp.
is used as the current value, the value
means the converted value, which is
equal to the input range of the current
value from 0 to 16,000.
Error code value
16: A disconnection detected
17: B disconnection detected
18: b disconnection detected,
A and B disconnection
Simultaneously detected.
19: Indicates that the detected
temperature is outside the input
range(-200~600.0
℃
) of the
RTD.
-
“
33 SET data enable/disable specification
Bit On(1) : The contents at address
0~8 are changed with
new values.
Bit Off(0): The contents at address
0~8 remains with the
previous value.
No
setting
values
R/W
34 Channel run information Bit On(1):Run, Bit Off(0): Stop - Read only
35
Error information specifying RTD type Bit On(1):Outside the setting range
Bit Off(0): Normal
- “