
LaserSpeed 8000/9000 I/O Module Instruction Handbook
Installation
Part No. 93342 / Drawing No. 0921-01516
Page 24 of 84
Revision E (Dec 2013)
Elongation/Synchronization
Multiple I/O Modules can be connected together for applications that require
measurement synchronization and calculation of length elongation/differential
speed. This is accomplished by interconnecting the I/O Modules’ SYNC ports,
which are located on the rear panel. The shortest user update rate is 2 ms when
calculating the elongation ratio. If 1 ms user update rate is selected in the gauge
the I/O Module will only update its outputs every 2 ms.
Master/Slave I/O Modules
I/O Modules can either be masters or slaves, depending on where they are
located in the system. The way that the I/O Modules’ SYNC ports are
interconnected determines their relationship. When measuring elongation
ratio/differential speed, the Master gauge is located before the first roller stand.
This gauge measures the lowest speed of all the gauges in the system. All the
other gauges in the system are Slaves. The Slaves’ measurements are
synchronized to the Master, and make all their measurements at the same time
as the Master.
See the drawing on the following page.