
2.SIGNAL DESCRIPTIONS HANDLING B-65395EN/01
- 64 -
(7) Response data readable signal EOSTB
[Classification] Input signal <Xx+4#6>
[Function] The servo amplifier module indicates that data requested using a
function code command has been output as response data and is now
readable.
[Input condition] The state of the signal is inverted when:
1. The response data becomes readable.
(8) Response data read completion signal EOREND
[Classification] Output signal <Yy+4#6>
[Function] The host notifies the servo amplifier module that it has read response
data.
[Operation] When the state of the signal is inverted, the servo amplifier module
behaves as follows:
1. The result of function code command execution is output as
response data.
2. If a function code command is a data output command, the
command is executed, and the result is output as response data.
NOTE
If the result of exclusive-ORing EOSTB with
EOREND is 1, it becomes impossible to output
further command data. Before inverting the state of
EOREND, apply appropriate countermeasures.
(9) Command continuation notification signal ECNT
[Classification] Output signal <Yy+4#0>
[Function] When the host has too much command data to be sent at one time, it sets
the ECNT signal to 1 to inform the slave that remaining data exists.
[Operation] When the ECNT signal becomes 1, the servo amplifier module behaves
as follows:
1. After receiving command data from the buffer, the servo amplifier
module inverts the state of the EBSY signal so that it matches the
state of the EBUF, thereby prompting the transfer of the next data.
The signal is reset to 0 at the last data of a series of commands.
(10) PMM data signal USR1
[Classification] Input signal <Xx+4#3>
[Function] Direct commands transfer data using the same area as the power mate
CNC manager function. If USR1 is 0, it is necessary to perform special
processing to read the data, because it is a response from the ladder
program of the host. If USR1 is 1, the response command (Xx+4 and
after) is for the power mate CNC manager and, therefore, the ladder
program on the host ignores it.
[Input condition] The signal becomes 1 when:
1. The response data is power mate CNC data.
The signal becomes 0 when:
1. The response data is data from a ladder program.