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; IP address 172.54.125.34
2NTCONN1 ; Attempt connection to network server #2
2NTMPRB3,15,15,35 ; File 3, elements 15-29, in the AB PLC are mapped to
; the 6K's binary variables VARB35-VARB49
2NTPOLL50 ; Start polling network server #2, set interval to 50 ms
WAIT(VARB40=b1111111100000000) ; Wait until the value of VARB40 (mapped to file 3,
; element 20, in the PLC) is 1111111100000000
NTMPWB
Network Map Binary Variables for Writing to PLC
Type:
Network
Product Rev
Syntax:
<!><n>NTMPWB<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
binary (VARB) 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 = 1-125
Default:
1NTMPWB0,0,0,0 (no mapping)
Response:
1NTMPWB: *1NTMPWB1,5,15,23
See Also:
NTCONN, NTIP, NTMPRB, NTMPWI, NTMPRI, NTPOLL, [ NTS ], TNTS,
TNTSF, VARB
6K 5.3
<n>
NTMPWB
<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 binary variable (VARB) in 6K
(beginning of range, max value is 125)
EXAMPLE:
IF:
•
Allen-Bradley PLC is server #2
•
In the PLC’s binary data file 3, use
data elements 0-14 (15 elements
total) for binary data that is to be
transmitted from the 6K.
•
Use the 6K’s binary variables 20-34
(15 variables total) to store the data
to be transmitted to the PLC.
The required mapping command is:
2NTMPWB3,0,15,20
The NTMPWB
command maps a range of binary data elements from the AB PLC to a range of binary (
VARB
) variables in the
6K. There are 125
VARB
variables available in the 6K for exchanging binary data. To perform a binary 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).
3. Map a range of binary elements in the AB PLC to a range of binary (
VARB
) variables in the 6K (
NTMPWB
command).
4. Start polling the AB device at a specific polling interval (
NTPOLL
command). This updates binary data elements in
the AB PLC with the data from the mapped
VARB
variables in the 6K.
Saved in Non-Volatile Memory
This command is saved in the controller’s non-volatile memory, and is remembered on power-up
and RESET.
Potential Error Conditions:
• You are not allowed to map the same 6K VARB
variables for read and write functions. Nor are you allowed to map
the same 6K
VARB
variables to another PLC. If you attempt either of these conditions, the 6K will not accept the
NTMPWB
command and will transmit the error message “
VARIABLE MAPPING CONFLICT…
”.
• If you attempt to write to an AB data file of the wrong type, or to a non-existent data element, the 6K will not
accept the
NTMPWB
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).
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