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Potential Error Conditions:
• You are not allowed to map the same 6K
VARI
variables for read and write functions. Nor are you allowed to map
the same 6K
VARI
variables to another PLC. If you attempt either of these conditions, the 6K will not accept the
NTMPRI
command and will transmit the error message “
VARIABLE MAPPING CONFLICT…
”.
• If you attempt to read from an AB data file of the wrong type, or read from a non-existent data element, the 6K will
not accept the
NTMPRI
command, it will transmit the error message “
ERROR, INVALID FILE TYPE, NUMBER
OR SIZE…
” and it will automatically stop polling all mapped binary and integer variables (equivalent to executing
the
NTMPRBi,i,0,i
,
NTMPWBi,i,0,i
,
NTMPRIi,i,0,i
, and
NTMPWIi,i,0,i
, commands).
Control over Polling: If you want to stop the 6K from reading integer data from the PLC, but continue to exchange
NTMPWI
,
NTMPRB
and
NTMPWB
data, use the
NTMPRIi,i,0,i
command. If you need to stop polling all mapped variables,
use the
nNTPOLL0
command.
Example:
2NTIP1,172,54,125,34 ; Identify network server #2 as an Allen-Bradley PLC at
; IP address 172.54.125.34
2NTCONN1 ; Attempt connection to network server #2
2NTMPRI9,15,15,35 ; File 9, elements 15-29, in the AB PLC are mapped to
; the 6K's integer variables VARI35-VARI49
2NTPOLL50 ; Start polling network server #2, set interval to 50 ms
WAIT(VARI40=22) ; Wait until the value of VARI40 (mapped to file 9,
; element 20, in the PLC) is 22
NTMPWI
Network Map Integer Variables for Writing to PLC
Type:
Network
Product Rev
Syntax:
<!><n>NTMPWI<i>,<i>,<i>,<i>
Units:
n = network server #
1
st
i = Allen Bradley data file #
2
nd
i = # of the 1
st
element in data file (beginning of range)
3
rd
i = # of the elements to include in range
4
th
i = # of the 1
st
integer (VARI) variable in the 6K to map to
Range:
n = 1-6
1
st
i = 0-n (n depends on size of file)
2
nd
i = 0-n (n depends on size of file)
3
rd
i = 0 or 1-50 (0 disables polling for this mapping only)
4
th
i = 1-225
Default:
1NTMPWI0,0,0,0 (no mapping)
Response:
1NTMPWI: *1NTMPWI1,5,15,23
See Also:
NTCONN, NTIP, NTMPRB, NTMPRI, NTMPWB, NTPOLL, [ NTS ], TNTS,
TNTSF, VARI
6K 5.3
<n>
NTMPWI
<i>,<i>,<i>,<i>
Network Server #
Range: 1-6
# of Allen-Bradley data file
# of first element in AB data file
(beginning of range)
# of elements in range
# of first integer variable (VARI) in 6K
(beginning of range, max value is 225)
EXAMPLE:
IF:
•
Allen-Bradley PLC is server #2
•
The PLC’s integer data file 9 has 30
elements. Use data elements 0-14
(15 elements total) for integer data
to be transmitted from the 6K.
•
Use the 6K’s integer variables 20-34
(15 variables total) to store the data
to be transmitted to the PLC.
The required mapping command is:
2NTMPWI9,0,15,20
The
NTMPWI
command maps a range of integer data elements from the AB PLC to a range of integer (
VARI
) variables in
the 6K. There are 225
VARI
variables available in the 6K for exchanging integer data. To perform a integer write to the
PLC:
1. Assign the AB PLC a server number, according to its IP address (
NTIP
command).
2. Connect to the AB PLC, according to its server number (
NTCONN
command).
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