4-34
Communication Interfaces
HPG 13150 400 V (A)
Dressler
®
HF-Technik GmbH
Prerelease version
Bytes 0 and 1 of the upload packet contain information about the HPG
generator; this information appears as status bits (or status “flags”).
defines these status bits:
In the first status byte, bit 13 (the active toggle bit) indicates the status of the
PROFIBUS
interface. After the HPG generator has powered up, this bit’s
continuous change indicates that the
PROFIBUS
interface is ready. During
operation, a cessation of this change indicates that a communication problem
exists.
In the packet, bytes 8, 9, 10, 11, and 12 comprise the “data field” and contain
information defined by byte 13, the data field definition byte. Note that when
the data extends over more than one byte, the
PROFIBUS
sends the least
significant byte (LSB) before the most significant byte (MSB). Byte 13
references the requesting command.
Host Port—Ethernet (Modbus/TCP)
This section describes the
Ethernet
host port. For information on the
RS-232
“Host Port—RS-232 With AE Bus” on page 4-21
. For
information on the
PROFIBUS
host port, see
.
Note:
To determine which option you have, see
Table 4-8. Upload status bytes
Bit
Description
First Status Bit
8 = Control mode (with bit 9)
9 = Control mode (00 =
User
, 10 =
PROFIBUS
)
10 = Set point status OK
11 = Reserved
12 = End of Target Life (EOTL)
13 = Active toggle bit
14 = Bus fault (high or low)
15 = Reserved
Second Status Bit
0 = Reserved
1 = Overtemperature condition
2 = Interlock mechanism open
3 = Momentary power failure
4 = Reserved
5 = Contactor not closed
6 = Reserved
7 = Output is on
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