User Manual

Chapter 7: Enabling and Using HART on the 1769sc-IF4IH0
U ser 's M a n u a l 0 300 21 5- 03 R ev. A
7-7
Table 7-3 (HART Packet 2)
Tag Name
Data Type
Style
De scription
If 4ih0 Packe t2 Pa cket2 [4, 1] NA Two dimen sional array containin g packe t
2 data for all 4 channels.
If4ih0 Packet2 [X,0]
1
Pa cket2 N A Packet 2 da ta for chann el X
If4ih0 Packet2 [X,0].HartChan nelID IN T B IN B i ts 0 t o 3: C hanne l numbe r (0 – 3).
Bit 4: Se arc hing/Initializing HART device
B it 5: HAR T communic ation f ailur e or
de vi c e not found
B it 6: Pa ss-through mess age pending (re ady)
B it 7: Unused (0)
B its 8 t o 10: P acket ID
B it 11 t hrough 15: Unused
If4ih0 Packet2 [X,0].S lot0 Data REAL Floa t
Variable for slot 0
If4ih0 Packet2 [X,0].S lot1 Data REAL Floa t
Variable for slot 1
If4ih0 Packet2 [X,0].S lot2 Data REAL Floa t
Variable for slot 2
If4ih0 Packet2 [X,0].S lot3 Data REAL Floa t
Variable for slot 3
If4ih0 Packet2 [X,0].S lot0 Units SINT DEC
S lot 0 uni ts code
If4ih0 Packet2 [X,0].S lot1 Units SINT DEC
S lot 1 uni ts code
If4ih0 Packet2 [X,0].S lot2 Units SINT DEC
S lot 2 uni ts code
If4ih0 Packet2 [X,0].S lot3 Units SINT DEC
S lot 3 uni ts code
If4ih0Packet2[X,0].Slot0Assi gnment SINT DEC
S lot 0 variable code
If4ih0Packet2[X,0].Slot1Assi gnment SINT DEC
S lot 1 variable code
If4ih0Packet2[X,0].Slot2Assi gnment SINT DEC
S lot 2 variable code
If4ih0Packet2[X,0].Slot3Assi gnment SINT DEC
S lot 3 variable code
If4ih0 Packet2 [X,0].P ad SINT[1 2] DEC
Packet p ad
1
X repr ese nt s th e m o dule ch ann el n umb er ( 0 t o 3 )
Table 7-4 (HART Packet 3)
Tag Name
Data Type
Style
Description
If 4ih0 Packe t3 Pa cket3[4 , 1] NA Two dim ensio na l array contain ing packet
3 da ta for a ll 4 chan ne ls.
If4ih0 Packet3 [X,0 ]
1
Pa cket3 NA Packet 3 data f or ch an ne l X
If4ih0 Packet3 [X,0 ].HartChan ne lID INT BIN Bi ts 0 to 3: Cha nnel num ber (0 – 3).
B it 4: S ea rc hing/Initi al izi ng HAR T devi ce
Bi t 5: HART com munication fail ure or
de vice not f ound
B it 6: P a ss -t hr ough me s sage pending ( re ady)
B it 7: U nuse d ( 0)
Bits 8 to 10 : P ac ket I D
B it 11 through 15: Unused
If4ih0 Packet3 [X,0 ].Me ssage SINT[3 2] ASCII
32 c har ac ter message
If4ih0 Packet3 [X,0 ].Pad SINT[4 ] DEC
Pa d 32 bit al ignme nt.
1
X repr ese nt s th e mo dule ch ann el n um b er ( 0 t o 3 )