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TD 200 Parameters and Messages
0
C - Character Set
0 - TD 200 Standard Characters
1 - Character set selected by
bytes 12 and 13
P - Edit Password
0 - disable
1 - enable
T - TOD Clock Menu
0 - Disable the TOD clock menu
1 - Enable the TOD clock menu
Figure D-4 Information Contained in Byte 3 of the TD 200 Parameter Block
Number of Messages Byte 4
Byte 4 of the TD 200 parameter block defines the number of messages you have
configured. The TD 200 accepts values 0 to 80.
Prioritizing Messages
To ensure that you receive the most important message first, the TD 200 uses a
fixed priority scheme. In this scheme, a higher priority message displaces a lower
priority message. There is one message-enable bit for each message. Therefore,
you can have from 0 to 80 message-enable bits corresponding to the number of
messages. You must not use message-enable bits for any other purpose other
than enabling messages. The TD 200 requires that you allocate full bytes for
message-enable bits.
Messages are numbered in ascending order starting with message 1. Message 1
is located at the message address specified by configuration bytes 6 and 7 of the
TD 200 parameter block. Byte 0 of the message-enable bits is located at the
message-enable address specified by configuration bytes 8 and 9 of the TD 200
parameter block. The highest priority message is message 1 and the lowest priority
message is message 80. See Section D.5 for more information on message
priorities and the display of messages.
Figure D-5 shows the prioritization scheme and the correspondence between
message-enable bits and messages.
D-6
TD 200 Configuration
Byte 2
Byte 3
1
MSB of
LSB of
Config.
Config.
MSB
LSB
7 6
5
4
3
2
1
C
T
F
UA DA
0
4
5
6
7
8
9
D - Display Mode
0
0 - 20 characters per message
1 - 40 characters per message
D
DA- Down arrow key
0 - Key was not pressed
1 - Key was pressed
UA - Up arrow key
0 - Key was not pressed
1 - Key was pressed
F - Force Function
0 - Disable the force function menu
1 - Enable the force function menu
SIMATIC TD 200 Operator Interface
10
11
12
13
C79000-G7076-C272-01
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