Delta RMC101 - Manual (Page 911)

Appendix E: Event Step Link Reference
E-21
1. Under Link Type Category, select System-wide (Basic, non-axis).
2. Under Link Type, select Skew Detection.
3. Under Link Condition, check the boxes next to each axis that you want to be included in the skew
detection.
4. Under Link Condition, check the type of comparison to determine the skew.
5. Click OK.
6. Ensure that the Extended Link Value has been set up using the Set Extended Link Value
command.
Using without the Link Type and Link Value Dialog Box
1. Enter '<' into the Link Type field for Skew on Actual Position, or '0x7f' for Skew on Following
Error.
2. Enter the Link Value.
You must understand binary to enter the Link Value manually. Each bit of the Link Value
corresponds to an axis. Bit 0 corresponds to axis 0, bit 1 corresponds to axis 1, etc. Bits 8-15 are
always unused. Each axis's bit that is on means that you wish to include that axis in the skew
detection.
3. Ensure that the Extended Link Value has been set up using the Set Extended Link Value
command.
E.4.12 Link Type - Timer
Link
Type: TimerSt/Exp (T, hex 0x54, dec 84) - Start Timer/Timer Expired
TimerNExp (t, hex 0x74, dec 116) - Timer Not Expired
Link
Value: 0 to start timer, otherwise timer preset in milliseconds
Range: 0 to start timer, or 1 to 65,535 milliseconds
Note: This feature is supported in RMC100 CPU firmware dated 20010420 or later.
These link types are used to start a timer and to wait for the timer to reach a preset. The DelayMS
(D) link type offers similar functionality. However, while the DelayMS link type starts the timer
when the event step is reached, the Timer (T and t) link types separate the starting and checking
of the timer into two or more steps. This allows the following capabilities that are not available
using the Delay (D) link type:
• The timer can be started at the beginning of a sequence of steps and checked after the sequence
has completed. In effect, this timer can be used to check how much time has passed since the
beginning of a section of the process rather than simply pausing for a fixed amount of time as the
DelayMS (D) link type does. See Example 1 below.
• The Timer (T and t) link types can be used in a polling loop. See the Poll (?) command for details.
One common use for polling link types is to keep track of a timeout. The DelayMS (D) link type
does not work in these situations because it restarts its timer each time that step is reached. See