LINK Systems OmniLink - PLC Interface - Manual (Page 33)

June 5, 2000 Man ual Rev 1 .0
5.6
It can take a relatively long period of time (around 30 seconds) for the reply to come from this
request. When the job change request is received, the Link equipment checks to see if the job is
valid. If it is, the job is recalled. If the job is not valid, a job number command is still generated but
the job number will be unchanged. Therefore, it is a good idea to check the reply to this message to
verify the job has been changed as intended.
Section 5.6.3 Request for User Parameter Value
From PLC:
[LF]U[PNUM]?[CR]
where:
[PNUM] is the three digit parameter number (with leading zero if necessary) of the value
requested.
Reply From Link:
Generates User Parameter Command (See section 5.5.2).
Notes:
None.
Section 5.6.4 Request for Machine Parameter Value
From PLC:
[LF]P[PNUM]?[CR]
where:
[PNUM] is the three digit parameter number (with leading zero if necessary) of the value
requested.
Reply From Link:
[LF]P[PNUM]=[PVAL][CR]
where:
[PNUM] is the three digit parameter number (with leading zero if necessary) of the value
requested.
[PVAL] is the value of the parameter requested.
Notes: