User`s manual

7-44 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual – January 2001 GFK-1742A
7
Parameters (P0-P255) in the DSM314
The DSM314 maintains 256 double word parameters (0 through 255) in memory. These
parameters can be used as variables in ACCEL, VELOC, DWELL, PMOVE, and CMOVE motion
commands. Be aware that range limits still apply and errors may occur if a parameter contains a
value out of range. Parameters 216-255 are special purpose parameters. Some of the special
purpose parameters are automatically written by the DSM314. For example, P224 is
automatically updated when Position Strobe 1 on Axis 1 occurs. The following table describes the
function of the special purpose parameters.
Table 7-1. Special Purpose Parameters
Parameter
Number
Special Purpose Function Axis Units
216-223
Reserved
224
Position Strobe 1
Axis 1 user units
225
Position Strobe 2
Axis 1 user units
226
Commanded Position
at Follower Enable Trigger
Axis 1 user units
227 Follower Incremental Stop Distance Axis 1 user units
228-231
Reserved
232
Position Strobe 1
Axis 2 user units
233
Position Strobe 2
Axis 2 user units
234
Commanded Position
at Follower Enable Trigger
Axis 2 user units
235 Follower Incremental Stop Distance Axis 2 user units
236-239
Reserved
240
Position Strobe 1
Axis 3 user units
241
Position Strobe 2
Axis 3 user units
242
Commanded Position
at Follower Enable Trigger
Axis 3 user units
243 Follower Incremental Stop Distance Axis 3 user units
244-247
Reserved
248
Position Strobe 1
Axis 4 user units
249
Position Strobe 2
Axis 4 user units
250
Commanded Position
at Follower Enable Trigger
Axis 4 user units
251 Follower Incremental Stop Distance Axis 4 user units
252-255
Reserved
Parameters are all reset to zero after a power cycle or after a DSM314 configuration is stored by
the PLC. Parameters can be assigned in three ways: