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Byte 3 of the TD 200 parameter block allows you to enable the Time-of-Day (TOD) and
Force menus, to select either 20- or 40-character display mode, and/or to enable password
protection (before allowing any editing). It also contains bits which are set when either the UP
or DOWN arrow keys are pressed.
(C) TOD Clock and (F) Force The TOD Clock and Force selections allow you to
selectively enable the TOD Clock menu and/or the Force menu. Once either is enabled,
you are allowed to access that function in the TD 200. If the function is not enabled, it
does not appear in the TD 200 Menu mode.
(D) Display Mode The display mode selection allows you to choose whether display
messages are one line (20 characters) or two lines (40 characters).
(P) Edit Password The edit password selection allows you to enable a four-digit
password (using 0000–9999) to authorize an operator to edit variables embedded in a
message. The password itself is stored in bytes 10 and 11 of the parameter block.
(UA and DA) Up Arrow and Down Arrow The up/down arrow status bits allow your
program additional control of the TD 200 display. The TD 200 sets these bits in the
controller if you press these keys while the TD 200 is in display mode, assuming there is
no more than one message active. If your program uses these bits, the program must
reset these bits after they are used.
Figure D-4 shows the information contained in Byte 3.
P – Edit Password
0 – disable
1 – enable
C – TOD Clock Menu
0 – Disable the TOD
clock menu
1 – Enable the TOD
clock menu
*Note: Values are given in hexadecimal values.
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.
SIMATIC TD 200 Operator Interface
C79000-G7076-C205-04
TD 200 Configuration
Byte 2
Byte 3
0
1
MSB of
LSB of
Config.
Config.
MSB
7 6
5
4
3
2
1
0
C
F
UA DA
TD 200 Parameters and Messages
4
5
6
7
8
9
LSB
D – Display Mode
0
0 – 20 characters per message
1 – 40 characters per message
0
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
10 11
D-5
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