Specifications

4 Communication settings and guide of HMI connecting with controller
SIEMENS S7-300/400 (PC Adapter Direct)
Device Bit Address Word Address Format Notes
External Input node
I 0.0~511.7 ------ DDDD.O
External Output node
Q 0.0~511.7 ------ DDDD.O
Internal assistant node
M 0.0~4095.7 ------ DDDD.O
Data Register Relay node
DBm.DBX
0~65535.7
------ DDDDD.O m:10~60
Data Register Relay
------ DBm.DBW 0-65534 DDDDD m:10~60
Data Register Relay (32 bit)
------ DBm.DBD 0-65532 DDDDD m:10~60
Internal Relay
------ MW 0~2046 DDDD
Internal Relay (32 bit) ------ MD 0~2044 DDDD
External Output Relay ------ QW 0~126 DDD
External Output Relay (32 bit) ------ QD 0~124 DDD
External Input Relay ------ IW 0~126 DDD
External Input Relay (32 bit) ------ ID 0~124 DDD
NOTE:
1. The initial address of DBm.DBW and DBm.DBD must be even number.
2. Make sure that the data block defined in PLC should be more than the data block used in HMI. For
example, if DB5.DBW32 is used in HMI, user can’t define the data block up to DB5.DBW32, but up to
DB5.DBW34 or more.
SIEMENS S7-300/400 (MPI Direct)
Device
Bit Address
Word Address
Format
Notes
External Input node
I 0.0~255.7 ------ DDDD.O
External Output node
Q 0.0~255.7 ------ DDDD.O
Internal assistant node
M 0.0~8191.7 ------ DDDD.O
Data Register Relay node
DBm.DBX 0.0~65533.7 ------ DDDDD.O m:1~60
Data Register Relay node
DBn.DBX
100000.0~409665535.7
------ DDDDD.O n:1~4096
Counter
------ C 0~2047 DDD
*
1
Timer
------
T 0~2047
DDD
Internal Relay
------ MW 0~8190 DDDD
External Output Relay
------ QW 0~254 DDD
External Input Relay
------ IW 0~254 DDD
Internal Relay
------
MD 0~8188
DDDD
External Output Relay
------ QD 0~252 DDD
External Input Relay
------ ID 0~252 DDD
Data Register Relay
------ DBm.DBW 0~65532 DDDDD m:1~60
Data Register Relay (32
------ DBm.DBD 0~65532 DDDDD m:1~60
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