YOKOGAWA F3SP71-4S, Руководство пользователя

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2-13
IM 34M06P15-03E 2nd Edition: Jan. 31, 2012-00
2.8 Modbus/TCP Slave Function Settings
This section describes the settings for using the Modbus/TCP slave function.
„ Required Settings
Settings required for using the Modbus/TCP slave function via Ethernet are as shown
below.
Table 2.8.1 Required Settings (Modbus/TCP Slave Function via Ethernet)
Setting Name Setting Type Reference for Details
*1
Ethernet Settings CPU Properties A9.5.2 Ethernet Setup
Higher-Level Link
Service Settings CPU Properties A9.5.4 Higher-level Link Service Setup
*1: Refer to items of "Sequence CPU Instruction Manual - Functions (for F3SP71-4N/4S, F3SP76-7N/7S)"
(IM 34M06P15-01E).
z Ethernet Settings
Settings are specified in order to connect to an Ethernet network. At a minimum, IP
address and subnet mask settings are required. If 0.0.0.0 is specified for the subnet
mask, a default mask corresponding to the IP address class is used.
z
Higher-Level Link Service Settings
Specify "2" for the port A or B protocol setting in order to use the Modbus/TCP slave
function. At this time, that port executes the Modbus/TCP slave function at port number
502 and the value of the command data format is ignored.
Additionally, enable the write-protect function (writing not permitted) if you want to
prohibit device writing using the Modbus/TCP slave function.
Table 2.8.2 Higher-Level Link Service Settings
Setting Description Setting Range Initial Value
Higher-Level Link
Service:
Port A Protocol
For selecting the protocol used by port A of the
higher-level link service of the Ethernet route.
Port number of port A is 12289 ($3001) if TCP/IP
or UDP/IP is selected, and port number is 502
($1F6) if Modbus/TCP (slave) is selected.
0 = TCP/IP
1 = UDP/IP
2 = Modbus/TCP
(Slave)
0 ( TCP/IP )
Higher-Level Link
Service:
Port A Command Data
Format
For selecting the command data format used by
port A of the higher-level link service of the
Ethernet route.
Ignored if Modbus/TCP (slave).
0 = ASCII format
1 = Binary format
0 (ASCII format)
Higher-Level Link
Service:
Port B Protocol
For selecting the protocol used by port B of the
higher-level link service of the Ethernet route.
Port number of port B is 12291 ($3003) if TCP/IP
or UDP/IP is selected, and port number is 502
($1F6) if Modbus/TCP (slave) is selected.
0 = TCP/IP
1 = UDP/IP
2 = Modbus/TCP
(Slave)
0 ( TCP/IP )
Higher-Level Link
Service:
Port B Command Data
Format
For selecting the command data format used by
port B of the higher-level link service of the
Ethernet route.
Ignored if Modbus/TCP (slave).
0 = ASCII format
1 = Binary format 1 (Binary format)
Write Protect Setting to prohibit writing command to this module
by the higher-level link service of the Ethernet
route.
0 = Writing
permitted
1 = Writing not
permitted
0 (Writing
permitted)