Modbus Plus language objects
Implicit Exchange Language Object
At a Glance
Bit Objects
This page describes all implicit exchange language objects for Modbus Plus communication, which can be displayed or modified by the application program (PL7
Micro/Junior/Pro ; Communication applications ; Volume 1).
The table below shows the different implicit exchange bit objects.
Object (1) Function
%Ixy.MOD.ERR
Error bit module
%Ixy.i.ERR
Error bit path
Meaning
When this bit is at 1, it indicates a module fault (at least one of the paths is faulty, etc.)
When this bit is at 1, it indicates a line fault.
Key
(1) xy.i address l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the path number
Word Objects The table below shows the different implicit exchange word objects.
Object (1)
%IWxy.i.0
Function
Requests
%IWxy.i.1
reserved
%IWxy.i.2 to
%IWxy.i.5
Stations present
Meaning
Status of communication paths
Byte 0: number of communication functions processed simultaneously in client mode l l l l x0 = 1: communication function 1 x0 = 1: communication function 2 x2 = 1: communication function 3 x3 = 1: communication function 4
Byte 1: number of communication functions processed simultaneously in server mode l l l l x8 = 1: communication function 1 x9 = 1: communication function 2 x10 = 1: communication function 3 x11 = 1: communication function 4
-
A bit at 1 indicates the presence of a station (01 to
64).
220
TLX DS COM PL7 xxE
TLX DS COM PL7 xxE
Modbus Plus language objects
Object (1)
%IWxy.i.6
%IWxy.i.7 to
%IWxy.i.9
%IWxy.i.11 à
%IWxy.i.13
%IWxy.i.15
Function
Status bit availability
Status of the specific inputs
Status of the specific inputs
%IWxy.i.10
Status of the specific inputs
New presence of specific inputs
New presence of specific inputs
%IWxy.i.14
New presence of specific inputs
Status bit availability
Status of the specific outputs
%IWxy.i.16 à
%IWxy.i.18
Status of the specific inputs
%IWxy.i.19
Status of the specific inputs
Meaning
Byte 0: the specific inputs of all remote stations are available l l l x0 = 0: the specific inputs are not available x0 = 1: the specific inputs are available x1 to x7: reserved
Byte 1: a bit at 1 indicates the presence of a station that is transmitting specific inputs. Stations 1 to 8.
A bit at 1 indicates the presence of a station that is transmitting specific inputs. Stations 9 to 56.
Byte 0: a bit at 1 indicates the presence of a station that is transmitting specific inputs. Stations 57 to 64.
Byte 1: a bit at 1 indicates the presence of new specific inputs. Stations 1 to 8.
A bit at 1 indicates the presence of new specific inputs. Stations 9 to 56.
Byte 0: a bit at 1 indicates the presence of new specific inputs. Stations 57 to 64.
Byte 1: not used
Byte 0: the specific outputs are available for all remote stations l l l x0 = 0: the specific outputs are not available x0 = 1: the specific outputs are available x1 to x7: reserved
Byte 1: a bit at 1 indicates the presence of a station that is receiving specific outputs. Stations 1 to 8.
A bit at 1 indicates the presence of a station that is receiving specific outputs. Stations 9 to 56.
Byte 0: a bit at 1 indicates the presence of a station that is receiving specific outputs. Stations 57 to 64.
Byte 1: not used
Key
(1) xy.i address l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the path number
221
