2. Programming Concepts
MN05003003E For more information visit: www.eaton.com
2-3
T Current value T0~T127, 128 words
C0~C127, 16-bit counter,
C Current value
C235~C254, 32-bit counter
General D0~D407, Note 1
Latched D408~D599, Note 3
Special D1000~D1311, 312 words
Word Register
D
Data register
Index
E=D1028, F=D1029, Note
1
Total
912
words
General storage for word
length data.
N Master control loop N0~N7, 8 points
P Pointer P0~P63, 64 points Subroutines pointer
External
interrupt
I001 (X0), I101 (X1),
I201 (X2), I301 (X3);
4 points (all are rising-edge trigger)
Time interrupt
I610~I699, 1 points
(Timer resolution = 1ms)
Pointer
I
Interrupt Service
Communication I150, 1 point
Address for interrupt
subroutines
K Decimal
K-32,768 ~ K32,767 (16-bit operation)
K-2,147,483,648 ~ K2,147,483,647 (32-bit operation)
Constant
H Hexadecimal
H0000 ~ HFFFF (16-bit operation),
H00000000 ~ HFFFFFFFF (32-bit operation)
Serial ports
COM1: RS-232 (Slave),
COM2: RS-485 (Master/Slave),
Both can be used at the same time.
Clock/Calendar (RTC) None
Special Expansion Modules Attach up to 8 modules of any type analog I/O expansion modules
Notes:
1. Data area is non-latched.
2. Default is non-latched, optionally can be set to latched.
3. Default is latched, optionally can be set to non-latched.
4. Data area is latched.
Items Specifications Remarks
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