A-M-Systeme GmbH
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On-the-spot help (FAQ)

Limitations when using Siemens controls:
1. Reading consistent data of a DP norm slave using SFC 14 "DPRD_DAT" Your CPU might be able to read consistent data via the process image of the inputs. Please refer to the manual Automatisierungssystem S7-300: Aufbauen to find out whether your S7-300 CPU supports this feature. All S7-400 CPUs support this feature.
(As of: Januray 2008)

2. Writing data consistently on DP norm slave using SFC 15 "DPWR_DAT"
Your CPU might be able to write consistent data via the process image of the outputs. Please refer to the manual Automatisierungssystem S7-300: Aufbauen to find out whether your S7-300 CPU supports this feature. All S7-400 CPUs support this feature.
(As of: January 2008)

3. Minimum requirement STEP 7 from version 5.x onwards with connection of S-HER082 / S-HER-AM-DP / S-HER-UN-DP-IO / S-HER-UN-DP-BELIMO / S-HER-UN-DP-Grundfos / S-HER-UN-DP-WILO
(As of: 14 June 2006)

Gateways: DIP switch position
The 4 DIP switches of the gateways (S-HER-UN-DP-BELIMO / GRUNDFOS / WILO) must be in the off-position. Otherwise the display will show a test menu, the LEDs will blink and the gateways will not go online on the PROFIBUS. Gateway-Korrekte-DIP-Schalter-Stellung.pdf
(As of: 31 July 2006)

Limitations with regard to the use of Beckhoff controls:
Up to and including version Build 1307 the problem regarding the correct interpretation of Hex numbers exists: Connection of S-HER082 / S-HER-AM-DP / S-HER-UN-DP-IO / S-HER-UN-DP-BELIMO / S-HER-UN-DP-Grundfos / S-HER-UN-DP-WILO modified GSD files upon request.
(As of: 16 November 2006)

S-HER-UN-DP-BELIMO gateway:
A maximum of 4 UST-3 manufactured by the company BV-Control (Switzerland) can be connected to a gateway.
(As of: 11 April 2006)

Limitations with regard to the use of Saia-Burgess controls:
From Firmware 1.24D onwards Saia PCD can be updated during operation when using the gateway. If older versions are used, the Saia-Burgess CPU has to be reset / re-started.
(As of: 23 June 2008)

S-HER-UN-DP-IO PROFIBUS slave with expansion modules
Limitation when using the S-HER-UN-DP-IO4 (4 slots) in connection with S-HER-UN4AE4AA (analogue expansion module):

current 0/4-20 mA: a maximum of 2 analogue modules can be connected
resistance measurement 0-65535 Ohm: a maximum of 2 analogue modules can be connected
Temperature measurement:
NI-1000: a maximum of 2 analogue modules can be connected
Pt-1000: a maximum of 2 analogue modules can be connected
TK 5000: a maximum of 2 analogue modules can be connected
NTC 10k: a maximum of 2 analogue modules can be connected
KTY81 110: a maximum of 2 analogue modules can be connected
KTY81 210: a maximum of 2 analogue modules can be connected
voltage measurement 0-10V: 4 analogue modules can be connected

(as of: 29 May 2007)