ProSoft Technology PLX3x Series, Руководство пользователя

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MBS Protocol PLX3x Series ♦ Multi-Protocol Gateways
User Manual
Page 124 of 215 ProSoft Technology, Inc.
January 25, 2018
7.2.2 MBS Port [x] Commands
Use the Modbus Port [x] Commands (where x can be 1, 2, 3 or 4) sections of the
PCB tree Window to define a naster serial port
Command List . This list holds the
parameters needed to poll slave devices attached to a Master port.
To configure the MBS Port [x] commands PCB
1 In ProSoft Configuration Builder , click the [+] next to the gateway, then click
the [+] next to MBS Port [x] .
2 Double-click the Modbus Port [x] Commands to display the Edit - Modbus
Port [x] Commands dialog box.
3 In the dialog box, click A
DD
R
OW
to add a command, then click E
DIT
R
OW
to
enter values for the command.
Parameter Value Description
Enable Disabled
Continuous
Event
Command
Conditional Specifies if the command is to be executed and under what conditions.
D
ISABLED
(0) - The command is disabled and is not executed in the
normal polling sequence. However, the command can still be activated
using Command Control.
C
ONTINUOUS
(1) - The command is executed upon each scan of the
Command List if you set Poll Interval to zero (0). If you set Poll Interval
to a non-zero value, the gateway executes the command when the
interval timer for that command expires.
E
VENT
C
OMMAND
(2) - The gateway executes the command only if the
internal data associated with the command changes. This parameter is
valid only for write commands (FC 5, 6, 15, and 16).
C
ONDITIONAL
(3) - The gateway executes the command only if the
internal bit data associated with the command changes. It also clears the
bit or bits in the internal database after the write command is built. This
parameter is valid only for bit-level write commands (FC 5 and 15).
Internal
Address 0 to 3999 (for
register-level
addressing)
or
0 to 63999 (for
bit-level
addressing) Specifies the database address in the gateway's internal database for
the destination for data from a read command, or as the source for data
for a write command. The database address is interpreted as a bit
address or a 16-bit register (word) address, depending on the Modbus
Function Code used in the command.

For Modbus functions 1, 2, 5, and 15, this parameter is interpreted
as a bit-level address.

For Modbus functions 3, 4, 6, and 16, this parameter is interpreted
as a register-level address.