T
he following table shows the general specifications of the XGB compact type CPU   
(XBC-Dx20/30/40/60SU).   
 
Items 
Specifications (“SU” type) 
Remark 
Program control method  Reiterative operation, fixed cycle operation, constant scan 
- 
I/O control method 
Scan synchronous batch processing method (Refresh method), 
Directed by program instruction 
Program language  Ladder Diagram, Instruction List 
Basic  28 
Application  687 
Processing speed 
(Basic instruction) 
94 ns/Step 
Program capacity  15 k steps 
Max. I/O points 
244 point   
(Main + Expansion 
254 point   
(Main 
264 point   
(Main 
284 point   
(Main 
Data area 
P  P0000 ~ P1023F (16,384 point) 
M  M0000 ~ M1023F (16,384 point) 
K  K0000 ~ K4095F (65,536 point) 
L  L0000 ~ L2047F (32,768 point) 
F  F0000 ~ F1023F (16,384 point) 
T 
100ms, 10ms, 1ms : T0000 ~ T1023 (1,024 point) 
(Adjustable by parameter setting) 
C  C0000 ~ C1023 (1,024) 
S  S00.00 ~ S127.99 
D  D0000 ~ D10239 (10,240 word) 
Word 
U  U00.00 ~ U0A.31 (Analog data refresh area: 352 word) 
Z  Z000~Z127 (128 Word) 
R  R0000~R10239 (10,240 word) 
Total program  128 
- 
Initial task  1   
Cyclic task  Max. 8 
I/O task  Max. 8 
Internal device task  Max. 8 
Operation mode  RUN, STOP, DEBUG 
Self-diagnosis function  Detects errors of scan time, memory, I/O   
Program port  RS-232C 1 channel, USB 1 channel 
Back-up method  Latch area setting in basic parameter