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1. Ethernet 4-25
Network Communications
Addresses
• $s514, 515
These addresses are related to macro commands [SEND], [EREAD] and [EWRITE].
$s514: Sets the executing status of the macro.
In the case of “0,” the next step of the macro is executed without waiting for the
completion of the command when a command request is given to the Ethernet.
In the case of other than “0,” the wait status continues until the command
completes, and then the next step of the macro is executed.
$s515: Stores the result of macro execution. An error occurs if a value other than “0”
is stored. For more information, refer to the error codes (page 4-47). However,
when $s514 is “0,” the data before the command request is stored.
• $s518
Stores the current status of the Ethernet. An error occurs if a value other than “0” is
stored. For more information, refer to the error codes (page 4-46).
• $s520 to 619
Stores the statuses of network table No. 0 to 99.
- Bit 0 (Network table use status)
[0]: Not used [1]: Used
For the current station, “0” (not used) is input.
- Bit 1 (Macro command execution status)
Stores the execution status of macro command [SEND], [EREAD] or [EWRITE].
[0]: Waiting [1]: Executing
- Bit 2 (Command execution status)
Stores the execution status of the command from the server or other station.
[0]: Waiting [1]: Executing (read/write command)
- Bit 3 (Macro command execution result)
Stores the execution result of macro command [SEND], [EREAD] or [EWRITE].
[0]: Normal [1]: Error
- Bits 4 to 15 (System reserved)
Not used at present. Always set “0.”
1514131211109876543210
Network table use status
Macro command execution
status
Command execution status
Command execution result
Not used