Functions Of Buffer Memory; Specifying Channel Enable/Disable; Specifying The Type Of The Rtd - LG GLOFA G3F - RD3A User Manual

Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS

6.2 Functions of Buffer Memory

4Each address in the internal memory occupies one word and it is represented with 16 bits.
4In the 16 bits which compose an address, every bit can be set to either "1" when it should be turned On or "0 "
when Off in order to implement the function of each bit.
6.2.1 Specifying Channel Enable/Disable (G3F-RD3A : Address 0, G4F-RD2A : Address 0)
1) RTD conversion enable/disable specification is available on each channel.
2) Unused channels can be disabled to shorten the sampling cycle.
3) All channels will be disabled if no enable/disable specification is applied.
4) The following show the temperature conversion enable/disable of the RTD input module.
G3F-RD3A
G4F-RD2A
6.2.2 Specifying the Type of the RTD (G3F-RD3A : Addresses 1~8, G4F-RD2A : Addresses 1~4)
1) Each type of the RTD connected to each channel of the RTD input module can be specified at each
channel.
2) A channel without its specification of the type of the RTD is specified to Pt 100 as its default.
3) The method of the type specification is same on every channel and the following shows it.
Address Corresponding
(Decimal)
1
2
3
4
5
6
7
8
G3F-RD3A
Setting Value
Channel
0 0 : Pt100
1 1 : JPt100
2
If a value other
3
than 0 and 1 is
4
specified,
5
error is indicated at
6
address 35
7 Pt100 is specified
6 - 3
G4F-RD2A
Address Corresponding
(Decimal) channel
1 0
2 1
3 2
4 3
then
and
Setting Value
0 : Pt100
1 : JPt100
If a value other
than 0 and 1 is
specified, then
error is indicated at
address 19 and
Pt100 is specified