Omron SYSMAC CJ1W-SCU21-V1, Руководство по эксплуатации

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Host Link FINS Command Master Appendix D
Command Frame Contents
Response Frame Contents
Item Contents
@ The @ symbol is automatically attached to the beginning of the command.
Host Link unit
number Specify the unit number for Host Link between 0 and 31 BCD.
Command code Specify a 2-character code. Always set “FA” (ASCII: 46, 41) when sending FINS commands. In this
protocol, “FA” is automatically generated.
Response wait
time The response wait time sets the time from when the CPU Unit receives a command block until it
starts to return a response. This time is automatically set to “0” (ASCII: 30).
ICF (Information
control field) Specify whether or not there are network relays. ICF is automatically set to “80” (ASCII: 38,30) indi-
cating that network relays are used.
RSV (Reserved) RSV is automatically set to “00” (ASCII: 30,30). Setting RSV is required only when sending to a CPU
Unit on a network.
GCT (Gateway
count) This is the number of networks through which the transmission can be relayed. “02” (ASCII: 30,32) is
automatically generated.
DNA (Destination
network address)
DA1 (Destination
node address)
DA2 (Destination
unit address) Specify the network, node, and unit addresses of the remote destination node.
DNA (Destination Network Address)
Set between 00 and 7F Hex (0 and 127 decimal). The network address (DNA) setting is required to
specify the node address on the specified network.
DA1 (Destination Node Address)
Set in hexadecimal. The setting range depends on the network type. Set to 00 hex as the local node
when sending commands to a PLC slave directly connected using serial communications.
DA2 (Destination Unit Address)
Set the address of the device on the FINS network (e.g., CPU Unit, Special I/O Unit, personal com-
puter).
CPU Unit: 00 hex
CPU Bus Unit: Unit 10 hex
Example: Set 13 hex for unit number 3.
Special I/O Unit (except C200H Special I/O Units): Unit 20 hex
Example: Set 23 hex for unit number 3.
SNA (Source net-
work address)
SA1 (Source node
address) Specify the source network and node addresses. These settings are set to “00” (ASCII: 30, 30)
regardless of whether or not there is a network relay.
SA2 (Source unit
address) Specify the unit address of the unit at the PLC slave that is connected to the PLC master. SA2 is
automatically set to “00” (ASCII: 30, 30) to indicate the CPU Unit. When “00” is set, internal process-
ing converts the value to the unit address of each serial port.
SID (Service ID) The SID is used as a counter when resending. It is automatically set to “55” (ASCII: 35, 35).
Command code,
text Set the command code and text according to the FINS command and response formats.
FCS (frame check
sequence) A 2-character FCS is automatically set.
Terminator The terminator is a required delimiter at the end of a command. The terminator is automatically set
to
* CR (ASCII: 2A, 0D).
Item Contents
@ The @ symbol is automatically attached to the beginning of the response.
Host Link unit num-
ber, header code The same unit number and header code specified in the FINS command that was received will be
returned.
ICF (Information
control field) For a CPU Unit on a network, “C0” (ASCII: 43, 30) will be returned.
RSV (Reserved) This section is reserved for the system. Set “00” (ASCII: 30,30).
GCT (Gateway
count) The same GCT that was specified in the command that was received will be returned.