Applies To:
  • CitectSCADA 5.50, 5.50 Service Pack A, 5.50 Service Pack B, 5.50 Service Pack C
  • CitectHMI 5.50, 5.50 Service Pack A, 5.50 Service Pack B, 5.50 Service Pack C
Summary:
Unable to get communications to ABB Commander 351 

Solution:
Upon further testing it is found that a limit of 8 consecutive analog registers can be read on one page and only 32 consecutive digital registers can be read on one page. NOTE : All tags works fine when only one tag is on a page

8 consecutive floating point addresses were used to read the analog values needed.

PV (pH Tx) PV R REAL 416385
SP (pH) SP (read only) R REAL 416387
SPW SP (write only) W (A or M) INT 40120
OP (FCV) OP1 R/(W in MAN) REAL 416389
OPW OP1 W (in MAN) INT 40022
AI2 (Flow Tx) R REAL 416391
P (Prop) R R/W REAL 416393
PW (Prop) W R INT 40104
I (Integral) R R/W REAL 416395
IW (Integral) W R INT 40105
OPMS R/W R/W DIGITAL 00039
DI1 (No Flow Sw) R R DIGITAL 00027
DI2 (spare) R R DIGITAL 00028
R1 (SV Crtl) MB1 R/W DIGITAL 00051
R2 (spare) MB2 R/W DIGITAL 00052

[MODBUS]
InitType=1
Block=5
PollTime=150
timeout=8000
maxbits=1000
debugstr=* all
FloatMode=1
 
Keywords:
ABB Commander 351  

Attachments