Favian Posted June 13, 2007 Report Posted June 13, 2007 hello, I have an HMI that is slow in writting an input to the PLC. Looking at the PLC online, when I press a button on the touch sreen it takes about a second for that bit to register on the PLC which in turn delays the output on the rung. HMI DP321 PLC DL405 both from Automation Direct. Does anyone have any suggestons. Quote
s7xp.com Posted June 14, 2007 Report Posted June 14, 2007 Normally a 405 CPU is fast. What protocol is used and type of terminal. Check the ligths on the CPU. Rx Tx. The ligth are unfortunately for all the three comm ports, so if more connected to the cpu disconeect it if possible. If you see receives and no transmits there is something wrong. Simple check. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.