11 – 142 HEIDENHAIN Service Manual iTNC 530 HSCI
Expanded PLC interface for 18 axes
Up to 18 axes can be operated in a system with HSCI.
Up to now, the PLC interface supported only 14 axes.
In order to use the increased number of axes, you must set bit 14 of MP4020 to 1.
If the control is set to 14 axes, the words below are used.
If it is set to 18 axes, the double words below are used (so that all information for up to 18 axes
can be displayed).
D 768 - 956 Value from MP4210.0 to MP4210.47 NC NC
W 960 - 968 Value from MP4220.0 to MP4220.4 NC NC
W 976 - 994 Value from MP4310.0 to MP4310.9 NC NC
W 1002 Last PLC run-time error that occurred NC NC
W 1008 S code for minimum speed NC NC
W 1016 PLC module that was last processed incorrectly NC NC
W 1018 Number of files opened by the PLC NC NC
W 1020 Number of all open files NC NC
W 1022 Error status of the last called PLC module NC NC
Operand Description Set Reset
16-bit word for the
PLC interface for
up to 14 axes
32-bit double
words for the
PLC interface for
up to 18 axes
Description Set Reset
W1024 D1100 Axis enabling NC NC
W1026 D1104 Axes in position NC NC
W1028 D1108 Axes in motion NC NC
W1030 D1112 Current direction of traverse NC NC
W1032 D1116 Reference marks not yet traversed NC NC
W1034 D1120 Positive software limit switch was approached NC NC
W1036 D1124 Negative software limit switch was approached NC NC
W1038 D1128 Prepare to open the position control loop PLC PLC
W1040 D1132 Axis-specific opening of the position control loop PLC PLC
W1042 D1136 Deactivation of monitoring functions PLC PLC
W1044 D1140 Actual-to-nominal value transfer PLC PLC
W1046 D1144 Manual traverse in positive direction PLC PLC
W1048 D1148 Manual traverse in negative direction PLC PLC
W1050 D1152 Incremental jog positioning in positive direction PLC PLC
W1052 D1156 Incremental jog positioning in negative direction PLC PLC
W1054 D1160 Reference end position PLC PLC
W1056 D1164 Lubrication pulse: Value in MP4050.x exceeded NC NC
W1058 D1168 Reset the accumulated distance (lubrication) PLC PLC
W1060 D1172 Axis-specific feed-rate enable PLC PLC
W1062 D1176 Lock the handwheel for specific axes PLC PLC
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