User Manual

Compact IO™ Isolated HART Analog Input Module
U ser 's M a n u a l 0 300 21 5- 03 R ev. A
6-6
Table 6-2b (Module Configuration)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
26
Defines Slot
Var iables
27
Defines Slot
Var iables
28
Defines Slot
Var iables
29
Defines Slot
Var iables
30
Defines Slot
Var iables
31
Defines Slot
Var iables
32
Defines Slot
Var iables
33
Defines Slot
Var iables
Channel 3 HART Slot Variables 2 & 3
Channel 1 HART Slot Variables 2 & 3
Channel 2 HART Slot Variables 0 & 1
Channel 2 HART Slot Variables 2 & 3
Channel 3 HART Slot Variables 0 & 1
Word
Bit
Function
Channel 0 HART Slot Variables 2 & 3
Channel 0 HART Slot Variables 0 & 1
Channel 1 HART Slot Variables 0 & 1
6.4.1 Real Time Sample Value (Word 0)
The real time sample value determines when the module will scan its input channels for
available data. After the channels are scanned, the data is made available to the PLC.
The valid range for the real time sample is 0
1
to 5000 ms (i.e. Enter a value of 0 to 5000).
Note: The Real Time Sample rate m ust be greater than or equal to the slowest channel
step response time. See Table 6-5 to determine the proper RTS rate.
Note: The configuration file ca n also be m odif ied through the control program, if
supported by the controller. For information on configuring the module using
RSLogix 500 (with MicroLogix 1500 controller), see Chapter 5; for RSLogix 5000
(CompactLogix controller), see Chapter 4.
6.4.2 General Configuration Bits (Word 1)
Word 1 is used to configure general module properties like enabling and disabling
HART, setting a HART handle time for HART messaging, and selecti ng one of three
scanning schemes for HART pass-through messages. The table below shows the
available settings for word 1.
Table 6-3 (General Configuration Bit s)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Disab le
0
Enabled
1
Disab le
0
Enabled
1
Disab le
0
Enabled
1
Disab le
0
Enabled
1
Pass -Through Sch eme
T wo Ch an nel Sc an s 0 0
Once Per Modu l e Sc an
01
Every C h ann el S can 1 0
Rese rve d
Set to Zero 0
ETS
D isa bled
0
Enabled
1
M ake the se bit se ttin gs
Han dle Timeo ut (1 to 25 5 sec)
CH0 HART Enabl e
CH1 HART Enabl e
CH2 HART Enabl e
CH3 HART Enabl e
To Select
Handl e Timeout
1
When RTS is set to zero, all channels are acquired freely and independently with no idle time. A channel
configured at a high filter frequency can be acquired multiple times in the time that a singl e acquisition is made for a
channel configured at a lo wer filter frequency.