Specifications

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Additional Functions Section 14-5
14.4.1 Data Types
Direct user access is possible to the following data types:
I Input Bit
IB Input Byte
IW Input Word
Q Output Bit
QB Output Byte
QW Output Word
M Flag Bit
MB Flag Byte
MW Flag Word
R Register Bit
RB Register Byte
RW Register Word
DW Data Register Word
TP Timer PRESET value Word
Constant or data register no., read-only
Use the data register to set the timer
TC Timer CURRENT value Word
read-only
CP Counter PRESET value Word
Constant or data register no., read-only
Use the data register to set the counter
CC Counter CURRENT value Word
read-only
HP Highspeed Counter Preset Double Word
Constant or data register no., read-only
Do not use in a table
HC Highspeed Counter Current Double Word
read-only
Do not use in a table
14.5 Additional Functions
In addition to the random read and write access to controller variables, a 12 byte
memory area is specified in the mask definition as a poll area.
The only marginal conditions regarding this memory area are that the PLC must be
able to access in bit-mode and the terminal in word-mode and the memory area
must be contiguous. This memory area must reside in the data register (DW).
The maximum data area size is 6 words.
Example: The cyclic poll area is set to DW10 in the programming system.
Word address DW High-byte Low-byte
Word address +0 DW10 Write coordination byte Reserved
Word address +1 DW11 Message channel high-byte Message channel
low-byte
Word address +2 DW12 Function key LEDs 1 to 4 LEDs 5 to 8
Word address +3 DW13 Function key LEDs 9 to 12 LEDs 13 to 16
Word address +4 DW14 Function key LEDs 17 to 20 LEDs 21 to 24
Word address +5 DW15 Function key LEDs 25 to 28 LEDs 29 to 32