Hello! I was looking for the information about Simultaneously active Alarms in 6ES7414-4HM14-0AB0, and got this manual: A5E00267695-09 But there is strange information about it. Simultaneously active Alarm_S/SQ blocks or Alarm_D/DQ blocks = max 100, like CPU 412–3H,and almost like s7-315. Is it erratum or not? I think amount could be more than 100.

Thanks.

Hi,

If you see the link below, you may notice that with S7-400 you have "ALARM_8" block listed as well. This option expand the number of active alarms. The article detail a 416-3, but you can use the same table to look up your CPU.

Look at this: What should you watch out for when using the alarm numbering procedure?

In this article you can read:

"Example taking CPU 416-3 to better explain the maximum values given in Tables 4 and 5:

1. You can configure a maximum of 1024 symbol-related alarms for CPU 416-3. All these alarms can be present at the same time.
2. You can program/configure a maximum of 1800 ALARM_8 blocks for CPU 416-3. All these alarms can be present at the same time(1800  * 8 alarms = 14400 alarms).
3. In CPU 416-3 you can have a maximum of 200 alarms consisting of ALARM_D or ALARM_S blocks. However, more alarms can be programmed/configured.

Note:

• Please note that not all these alarms are generally displayed simultaneously on the HMI. How many alarms can be displayed simultaneously on the HMI depends on the quantity structure of your HMI.
• The resources used for ALARM_8 blocks are different to those used for ALARM_S/ALARM_D."

I hope I could help!