EUCHNER AS-i 3.0 PROFIBUS Gateway with integrated Safety Monitor for 2 AS-i circuits - Manual (Page 127)

AS-i 3.0 PROFIBUS Gateway with integrated Safety Monitor
PROFIBUS DP
Subject to reasonable modifications due to technical advances Id.-No.: 103329 Issue date - 24.10.2008 EUCHNER GmbH + Co. KG 127
Kohlhammerstraße 16 • D-70771 Leinfelden-Echterdingen Tel. +49/711/75 97-0 • Fax. +49/711/753316
11.1.3.3 AS-i 16 bit data
In addition to the access via the command interfaces, the 16-bit data to or from
the slaves, respectively, (profile 7.3., S-7.4, S-6.0, S- 7.5, S-7.A.8, S-7.A.9, S-
7.A.A) can be transmitted cyclically with 16 bit values. Competing writing access
attempts on analog output data are not interlocking each other. If analog data for
a particular slave are transmitted both cyclically and acyclically via the command
interface or DP/V1 connections, the acyclically transmitted values are overwritten
by the cyclically transmitted values.
AS-i 16-bit data can be transmitted in a reserved data area. Therefore accessing
analog and digital data is very easy.
EC-Flags (high):
Bit 0: peripheral fault
Bit 1 … Bit 3: reserved
Bit 4: ground fault
Bit 5: over-voltage
Bit 6: noise
Bit 7: duplicate address
EC-Flags (low):
Bit 0: configuration error
Bit 1: slave with address 0 detected
Bit 2: auto address assignment not available
Bit 3: auto address assignment available
Bit 4: configuration mode active
Bit 5: not in normal operation
Information!
A-Slaves map the data on channels 1 and 2.
B-Slaves map the data on channels 3 and 4.
AS-i 16 bit data
Byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 Slave 31-n/8, channel 1, high byte
2 Slave 31-n/8, channel 1, low byte
3 Slave 31-n/8, channel 2, high byte
4 Slave 31-n/8, channel 2, low byte
… …
n-3 Slave 31, channel 3/Slave 31B, channel 1, high byte
n-2 Slave 31, channel 3/Slave 31B, channel 1, low byte
n-1 Slave 31, channel 4/Slave 31B, channel 2, high byte
n Slave 31, channel 4/Slave 31B, channel 2, low byte