Omron SYSMAC CS Series Operation Manual page 125

Generic Slave Device DTM
Max. Channel Data Length
Max. Alarm PDU Length
Alarms
Extra Alarm SAP
104
This parameter defines the maximum size in bytes of the acyclic message
exchanged with the PROFIBUS DP-V1 Master Unit. The size ranges from 4
bytes to 244 bytes. The actual upper limit of the number is defined by the
buffer capacity of the slave device.
This parameter defines the maximum size of an Alarm message sent from the
slave device to the PROFIBUS DP-V1 Master Unit. The Master Unit uses this
number to reserve buffers to handle the alarms. The maximum alarm mes-
sage size ranges from 4 bytes to 63 bytes
The Alarms box defines the types of alarms the slave device will report, as
well as the alarm handling capacity of the master device. The settings in this
box are conveyed to the slave device through the Set_Prm message sent by
the PROFIBUS DP-V1 Master Unit.
Control
Alarm mode
Pull Plug alarm
Process alarm
Diagnostic alarm
Manufacturer specific
alarm
Status alarm
Update alarm
For acyclic data exchange between a PROFIBUS DP-V1 Master Unit (Class
1) and a PROFIBUS DP-V1 slave device one specific SAP (Service Access
Point, the PROFIBUS definition for a message identifier) is defined by the
PROFIBUS DP Extension standard. By default SAP 51 is used for acyclic
data exchange with the PROFIBUS DP-V1 Master Unit (Class 1).
Description
The Alarm mode indicates to the slave device the amount
of alarms the PROFIBUS DP-V1 Master Unit can process
simultaneously. The following standard selections are
available:
• 1 alarm of each selected type
• 2 alarms in total
• 4 alarms in total
• 8 alarms in total
• 12 alarms in total
• 16 alarms in total
• 24 alarms in total
• 32 alarms in total
When set, this checkbox enables the signalling of a pull/
plug alarm type, i.e. the removal/insertion of a hardware
I/O module.
When set, this checkbox enables the signalling of a pro-
cess alarm type, i.e. an alarm related to the process con-
nected to the I/O.
Example: Upper Limit exceeded alarm.
When set, this checkbox enables the signalling of a diag-
nostic alarm, i.e. an alarm related to the functioning of a
specific I/O module in a slot.
Example: Short circuit detected.
When set, this checkbox enables the signalling of a Manu-
facturer specific alarm.
When set, this checkbox enables the signalling of a Status
alarm, i.e. an alarm related to an internal state change in
a module.
Example: Change to Run state, Stop state.
When set, this checkbox enables the signalling of an
Update alarm, i.e. an alarm indicating a change in the
parameters related to a specific module, either by local or
remote access.
Section 3-5