Technical data

R911305038 / 01 | Rexroth VCP-Operating Concept Electric Drives and Controls | Bosch Rexroth AG 5-173
Standard Mode
The settings for the printout can be changed online on the operating
device.
As the output consists of a pure text file, the message can also be read
by a host computer or a PC. With a further system variable PrintAllRe-
pLong, the full length of the message can be output.
5.22.6.3 Erasing the Message Memory Externally
The internal message memory of the serial message system can be
erased externally, that is from the controller. To do this, a symbolic
variable name for the delete variable must be specified in the Message
System option of the system parameters in the programming software.
Two bytes are needed in the controller for the variable.
The operating device always checks the delete variable in the control-
ler once it has received the delete sequence (write the control code
7FFE
H
to the serial message channel). The internal message memory
is erased when the delete variable contains the bit pattern E216
H
. The
delete variable increases protection against unintentional deletion.
If deletion is not required, you should reset the variable or specify no
symbolic name in the programming software.
5.22.7 Parallel Message System (Status Messages)
The parallel message system supplements the serial message system.
The messages are transferred in parallel and evaluated in the operat-
ing device. In this context, the current message status is compared
with the previous status in the operating device. The messages that no
longer exist are automatically deleted from the memory, and new mes-
sages are added to the memory. The current status of the messages
can be output.
All messages have a date and time, to enable you to determine when a
message appeared for the first time.
The length of the message buffer cannot exceed 256 bytes.
Set the length in the system parameters for the message system in the
programming software. Certain restrictions may apply to the length,
depending on the protocol used.
Status messages are only retained in the message memory for the
length of time they are reported by the controller. To set up a message
system with acknowledgment, you must have the messages of the par-
allel message system written to the serial message memory. You must
set the transfer of a message from the parallel to the serial message
memory separately for each message.
Status messages can be transferred on a time- and/or event-controlled
basis.