7-2
Section
Using Message Communications
93
Area
D
S
C
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants
#0000 to #FFFF
(binary)
---
D: #0000 to
#000F
D+1: #0001 to
#0080
Data Registers
DR0 to DR15
---
---
Index Registers
---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Specifying the Leading Address of the Response Words
Specify the leading address as shown in the following table. These tables show
only the ranges that can be used with message communications (limited to ac-
cessing word units). Refer to the PC’s manuals for more details.
Word
Bits 00 to 07
Bits 08 to 15
S
Data area specifier
Leftmost 2 digits of address
S+1
Rightmost 2 digits of address
Bit (always 00)
Area
Allowed range
Data area
specifier (Hex)
Address (Hex)
CIO Area
CIO 0000 to CIO 6143
B0
0000 to 17FF
Work Area
W000 to W511
B1
0000 to 01FF
Holding Bit Area
H000 to H511
B2
0000 to 01FF
Auxiliary Bit Area
A000 to A959
B3
0000 to 03BF
Timer Area (PVs)
T0000 to T4095
89
0000 to 0FFF
Counter Area (PVs)
C0000 to C4095
89
8000 to 8FFF
DM Area
D00000 to D32767
82
0000 to 7FFF
EM Area
(Current bank)
E00000 to E32767
98
0000 to 7FFF
EM Area
(EM banks 0 to 12)
E0_00000 to E0_32767
:
:
EC_00000 to EC_32767
A0 (bank 0)
:
AC (bank 12)
0000 to 7FFF
:
0000 to 7FFF
