Parker Hannifin GEM6K manual Ntmpwb, Network Map Binary Variables for Writing to PLC

2NTCONN1	; IP address 172.54.125.34
	; Attempt	connection to network server #2
2NTMPRB3,15,15,35	; File 3,	elements 15-29,	in the AB PLC are mapped to
2NTPOLL50	; the 6K's binary variables VARB35-VARB49
	; 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>		6K	5.3
Units:	n = network server #
	1st i = Allen Bradley data file #
	2nd i = # of the 1st element in data file (beginning of range)
	3rd i = # of the elements to include in range
	4th i = # of the 1st binary (VARB) variable in the 6K to map to
Range:	n = 1-6
	1st i = 0-n (n depends on size of file)
	2nd i = 0-n (n depends on size of file)
	3rd i = 0 or 1-50 (0 disables polling for this mapping only)
	4th 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

<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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