PROFIBUS Power Hub Segment Coupler 3 (SK3)
Operation
2
016-
10
37
■
Channel Diagnostic Parameters
• Hardware error
• No slave in live list
• DP watchdog time too short
• Duplicate slave address
• PA master not in token ring
• ADM: Segment out of specification
• ADM: Segment maintenance required
The
RedState data block
is a standardized diagnostic data block, it is inserted when the slave
receives a PRM command.
6.2
Coupled Slaves
This section applies to coupled slaves on non-redundant masters and to flying redundancy
masters.
All coupled PROFIBUS PA slaves behave as non-redundant PROFIBUS DP slaves after the
GSD file conversion, so that every PA slave appears directly on the DP bus.
The PA slaves are
not
merged to one single slave.
Both cyclic and acyclic communication is coupled.
As many C2 connections are coupled to the slaves as they support, altogether a maximum
of 500.
Seen from the master, redundancy switching of the gateway has no effect on PA slaves.
PA slaves do not drop out of communication.
The FREEZE and SYNC modes are coupled, but because DP communication and
PA communication are time-incompatible, they are not relevant for practical purposes.
Identification & Maintenance (I&M) functions are supported.
6.3
Acyclic Data Exchange with Built-In Slave via Device Type Manager
The built-in slave (BIS) supports 4 acyclic connections. In acyclic mode via the device type
manager (DTM), the following 3 dialogs are available:
■
Offline
■
Online
■
Diagnostics
In the
Offline
dialog, all parameters can be set locally without having any direct effect on
communication or the device. Data can be written to the device after all settings are made.
Current parameters can also be read in from the device, processed, and saved.
In the
Online
dialog, you directly effect device parameters. Your entry is written to the device
immediately, as soon as you press the <Return> key. The
Online
dialog additionally offers
diagnostic information on the gateway and the PA segments connected to the Power Hub.
The
Diagnostics
dialog shows the current device parameters and diagnostic information.
Changes to the data cannot be made in this dialog.
Note!
Data Loss
Settings made in the
Online
dialog are not automatically transferred to the
Offline
dialog.
In order to save online settings, load the data into the
Offline
dialog with the function
“
Read
data from device
”
.
