Mitsubishi Electric FX3U-ENET-ADP - Test in Bit Units (Random Write, ASCII)

7 Communication Using MC Protocol
65
FX3U-ENET-ADP User's Manual
1
Introduction
2
Specification
3
System Configuration
4
Installation
5
Wiring
6
Introduction of Functions
7
Communication Using MC Protocol
8
The Operation of GX Works2
9
Troubleshooting
A
List of Special Devices
7.5 Device Memory Read/Write
b) The following table outlines the device codes and numbers.
*1. It is not possible to specify D7999 or lower and D8000 or higher at the same time.
*2. It is not possible to specify C199 or lower (16 bits) and C200 or higher (32 bits) at the same time.
Caution
• Bit devices and word devices are classified according to the following.
Bit devices : X, Y, M, S, T (contact), C (contact)
Word devices :T (current value), C (current value), D, R
• When word units are designated, always make the head device number of a bit device a multiple of 16 (0,
16... in decimal representation).
For X and Y is expressed in octadecimal, the device numbers that can be designated are X00, X20, X40,,,
or Y00, Y20, Y40,,,.
Also, special auxiliary relays M8000 or later can be specified (8000 + multiples of 16).
• The special auxiliary relays (M8000 to M8511) and special data registers (D8000 to D8511)
are divided into read only, write only and system use registers.
If writing takes place outside the writing enabled range, a PLC error may occur.
For details of special auxiliary relays and special data registers, refer to the Programming Manual and
Appendix A.
Device Device code Device range Device number
Data register
*1
D
(44H, 20H)
D0 to D7999 0000 to 1F3FH
D8000 to D8511 1F40 to 213FH
Extension register
R
(52H, 20H)
R0 to R32767 0000 to 7FFFH
Timer
Current value
TN
(54H, 4EH)
T0 to T511 0000 to 01FFH
Contact
TS
(54H, 53H)
T0 to T511 0000 to 01FFH
Counter
Current value
*2
CN
(43H, 4EH)
C0 to C199 0000 to 00C7H
C200 to C255 00C8 to 00FFH
Contact
CS
(43H, 53H)
C0 to C199 0000 to 00C7H
C200 to C255 00C8 to 00FFH
Input
X
(58H, 20H)
X0 to X377 0000 to 00FFH
Output
Y
(59H, 20H)
Y0 to Y377 0000 to 00FFH
Auxiliary relay
M
(4DH, 20H)
M0 to M7679 0000 to 1DFFH
M8000 to M8511 1F40 to 213FH
State
S
(53H, 20H)
S0 to S4095 0000 to 0FFFH