Hi,
I have restarted the Z7 and retrained. I receive multiple weird hourly messages.

Read Z7.c
[543: Tue 27.12.16 18:06] 1.0455/1.04561.0454/1.0454
[544: Tue 27.12.16 19:06] 1.0454/1.04571.0452/1.0453
[545: Tue 27.12.16 20:04] 1.0453/1.04591.0453/1.0457
[546: Tue 27.12.16 20:05] 1.0457/1.04571.0457/1.0457
[547: Tue 27.12.16 21:02] 1.0457/1.04591.0455/1.0456
[548: Tue 27.12.16 21:04] 1.0456/1.04561.0456/1.0456
[549: Tue 27.12.16 21:06] 1.0456/1.04571.0456/1.0457

z7 should trade once every hour. Why 2 messages at 20 and 3 at 21? Is this normal?

Thank you

Yes, it is caused by a side effect of the Z7 coding. It was not intended, but is harmless. The next Z7 version will again print only one message per hour.

Gotcha, thank you