Mitsubishi Electric Melsec A Series - 3.5 Parameter Comparisons; 3.5.1 Parameter comparisons

4.A2CCPU
------------------- MELSEC-A
(2) Switch and connector layout inside the A2CCPUP21/R21
D
•
I
(12)
MITSUBISHI
BB
A 2CCPU R21
(1)
r--'
11 l -SDA
r---I
12 l -SG
1'---1
IJ I -SOB
r---I
1
4
I -RDA
r---I
lSI-ROB
1'---1
16 I-SLO
1'---1
17 I -ERR(+)
1'---1
La I -ERR(-)
r---I
19 l~
t- - - of ACl00j2O<lY
110 l J
r---I
'11 l'
1---; ~r~
\ __ ---'JJ'''-',f._ ~ J
-LO
L-ClR
RESET
(14)
(15)(2)
~ ... ~
\ Red leed
Blue leed 101=1
(10)
(8)
(9)
(13)
Battery
(11)
No. Name Function
(8) Memory protect switch
• The switch used to protect the data in the user memory area from being rewritten
mistakenly by operating an external device carelessly.
• For memory protect range, see Section 4.4.1.
Memory Protected
Memory Not Protected
Memory Memory
[j]2
protect switch
[1]2
protectswItch
D'
D'
ON~
ON-
sw
sw
•
4-88