6: ALLOCATION NUMBERS
6-2 « FC4A MICROSMART USER’S MANUAL »
Slim Type CPU Modules
Notes:
•
The least significant digit of input, output, internal relay, and special internal relay operand number is an octal number (0
through 7). Upper digits are decimal numbers.
• The allocation numbers of expansion inputs and outputs start with I30 and Q30, respectively.
• Note that input and output allocation numbers are not continuous between the CPU module and expansion I/O modules.
• A maximum of 7 expansion I/O modules can be mounted on all slim type CPU modules. The maximum I/O points depend
on the CPU module type as described below.
• The 20-I/O type CPU module (FC4A-D20K3 and FC4A-D20S3) can add a maximum of 128 I/O points, and use a maximum
of 148 points of inputs and outputs in total.
• The 20-I/O relay output type CPU module (FC4A-D20RK1 and FC4A-D20RS1) can add a maximum of 224 I/O points, and
use a maximum of 244 points of inputs and outputs in total.
• The 40-I/O type CPU module (FC4A-D40K3 and FC4A-D40S3) can add a maximum of 224 I/O points, and use a maximum
of 264 points of inputs and outputs in total.
• Four models of the slim type CPU modules (FC4A-D20RK1, FC4A-D20RS1, FC4A-D40K3, and FC4A-D40S3) with system
program ver. 201 and higher can use the AS-Interface master module, and have additional internal relays and data regis-
ters for AS-Interface communication. Use WindLDR ver. 4.20 or higher to program the AS-Interface operands. For details
about AS-Interface communication, see a separate user’s manual for the AS-Inter face master module.
• When the AS-Interface master module is not connected, these AS-Inter face operands can be used for basic and advanced
instructions like ordinar y internal relays and data registers. Note that these operands cannot be designated for keep or
clear operands in the Function Area Settings dialog box in
WindLDR. In addition, the clear operand data command of the
maintenance communication protocol and the designated reset input do not work on these AS-Interface operands. The sta-
tuses of these AS-Interface operands are maintained at power-up or when a reset input is turned on, but are cleared when
a keep data error occurs.
Operand
FC4A-D20K3
FC4A-D20S3
FC4A-D20RK1
FC4A-D20RS1
FC4A-D40K3
FC4A-D40S3
Allocation No. Points Allocation No. Points Allocation No. Points
Input (I)
I0 - I7
I10 - I13
12
I0 - I7
I10 - I13
12
I0 - I7
I10 - I17
I20 - I27
24
Expansion Input (I) I30 - I187
128
(140 total)
I30 - I307
224
(236 total)
I30 - I307
224
(248 total)
Output (Q) Q0 - Q7 8 Q0 - Q7 8
Q0 - Q7
Q10 - Q17
16
Expansion
Output (Q)
Q30 - Q187
128
(136 total)
Q30 - Q307
224
(232 total)
Q30 - Q307
224
(240 total)
Internal Relay (M) M0 - M1277 1024 M0 - M1277 1024 M0 - M1277 1024
AS-Interface
Internal Relay (M)
——M1300 - M1997 560 M1300 - M1997 560
Special Internal
Relay (M)
M8000 - M8157 128 M8000 - M8157 128 M8000 - M8157 128
Shift Register (R) R0 - R127 128 R0 - R127 128 R0 - R127 128
Timer (T) T0 - T99 100 T0 - T99 100 T0 - T99 100
Counter (C) C0 - C99 100 C0 - C99 100 C0 - C99 100
Data Register (D) D0 - D1299 1300 D0 - D1299 1300 D0 - D1299 1300
AS-Interface Data
Register (D)
——D1700 - D1999 300 D1700 - D1999 300
Expansion Data
Register (D)
——D2000 - D7999 6000 D2000 - D7999 6000
Special Data
Register (D)
D8000 - D8199 200 D8000 - D8199 200 D8000 - D8199 200
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