Siemens SINUMERIK 840C - Manual (Page 558)

09.95 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Address variable message function 1622
Default value Lower input limit Upper input limit Units
0000 0000 FFFF Hex
Active
at once
Input of address of memory location to be monitored via the variable message function.
Note:
This machine data is operative only if the signal number is set to 0 (see MD 1621).
Threshold variable message function 1623
Default value Lower input limit Upper input limit Units
000000 000000 FFFFFF Hex
Active
at once
Input of threshold for the memory location address entered in machine data "Address variable
message function" (MD 1622) to be monitored via the variable message function. In
conjunction with machine data "Hysteresis variable message function" (MD 1624), this
machine data defines the actual value to be checked by the monitoring function (see diagram
under MD 1620).
Note:
Depending on the setting of bit 2 in machine data "Bits variable message function" (MD 1620,
the numerical value entered in MD 1623 is interpreted either as an unsigned value (bit 2 = 0)
or a signed value (bit 2 = 1).
Hysteresis variable message function 1624
Default value Lower input limit Upper input limit Units
000000 000000 FFFFFF Hex
Active
at once
Input of hysteresis (tolerance band) for the memory location address entered in machine data
"Address variable message function" (MD 1622) which is to be monitored by the variable
message function. In conjunction with machine data "Threshold variable message function"
(MD 1623), this machine data defines the actual value to be checked by the monitoring
function (see diagram under MD 1620).
Note:
Regardless of the setting of bit 2 in machine data "Bits variable message function" (MD 1620),
the numerical value entered in MD 1624 is interpreted either as an unsigned value (bit 2 = 0)
or a signed value (bit 2 = 1).
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SINUMERIK 840C (IA)