External device setup manual – IDEC High Performance Series User Manual
Page 256

Chapter 2
238
External Device Setup Manual
5.5.2
S7- 300/400 with Communication Module
When using CP-341/441, following devices can be read and written.
When using CP-340440, only a data block (DB) can be read and written.
Bit Device
Device Name
Device Symbol
Address Range
Read
/Write
Address
Gradual
MICRO/I
PLC
Input (Bit)
I
I
0 - 1277
R
*1
*1. The 1st figure is written in octal number format,
and the 2nd [or more] figure is written in decimal number format.
Output (Bit)
Q
Q
0 - 1277
R
Memory (Bit)
M
M
0 - 2557
R
Word Device
Device Name
Device Symbol
Address Range
Read
/Write
Addres
s
Gradual
MICRO/I
PLC
Input (Word)
IW
IW
0 - 126
R
*1
*1. Only an even number can be specified.
Output (Word)
QW
QW
0 - 126
R
Bit Memory (Word)
MW
MW
0 - 254
R
Timer cell
T
T
0 - 127
R
Dec
Counter cell
C
C
0 - 63
R
Dec
Data Block
DB
DB
1000 - 255510
R/W
*1*2
*2. Please specify in the following ranges.
- When a non activated data block is accessed in the PLC, a communication error will occur. Please be sure to activate rele-
vant data blocks in the PLC.
- Endians differ in S7-300, and MICRO/I type. Please use neither bit specification of a WORD device, nor 32-bit WORD
(double WORD).