Hi,
The following problem have been noticed in recent projects which we have executed using S7200 PLC.
We have been using 226 CPU along with EM235(4AI/1AO) and EM231(4AI) for quite a number of projects. What we have noticed during is that, say we have given constant 16mA to one of the Analog Input channel of EM235. In this case the Raw Count should be constant at 25600. But very frequently this number changes by + or - 1500 to 2000 counts.
We also changed the 4 to 20mA souce & this is not working even the source is set to some constant value.
The same is noticed even with EM231 Analog Input Cards. We tried changing the Analog Filter settings. But this is not working.
Need some help.............
Regards
Nil
The following problem have been noticed in recent projects which we have executed using S7200 PLC.
We have been using 226 CPU along with EM235(4AI/1AO) and EM231(4AI) for quite a number of projects. What we have noticed during is that, say we have given constant 16mA to one of the Analog Input channel of EM235. In this case the Raw Count should be constant at 25600. But very frequently this number changes by + or - 1500 to 2000 counts.
We also changed the 4 to 20mA souce & this is not working even the source is set to some constant value.
The same is noticed even with EM231 Analog Input Cards. We tried changing the Analog Filter settings. But this is not working.
Need some help.............
Regards
Nil