16 I/Os for X are allocated. I/O addresses are determined depending on the installation location and the I/O allocations of the other units.
Input signal |
Name |
Description (0: OFF, 1: ON) |
Effective operation mode |
|
|---|---|---|---|---|
COM 1 |
COM 2 |
|||
X0 |
X2 |
Reception done flag |
When the MCU completes the data reception, it turns on. When waiting for the end of data reception: 0 When data reception completed: 1 |
Program controlled communication |
X1 |
X3 |
PLC data reception done flag |
When F161_MRCV is completed, it is set/reset. Reading completed: 1 Data not yet read: 0 1) |
|
X4 |
X5 |
Transmission done flag |
When transmission is available: 1 During transmission: 0 2) When transmission is completed: 1 |
|
X6 |
X7 |
Reception error |
When F161_MRCV is completed, it is set/reset. Errors exist in the data read: 1 No error exists in the data read: 0 1) |
|
X8 |
X9 |
CTS signal monitor |
Status of the CTS signal sent from the device being communicated with. Transmission from MCU is possible: 0 Transmission from MCU is not possible: 1 The RTS signal from the MCU is controllable by Y18 and Y19. |
Effective only when setting the RS/CS to be valid and using the communication block AFP2803 |
XA |
XC |
Latest reception error |
Set when an error occurs during the reception of data by the MCU No reception error: 0 Reception error: 1 The details of the reception error can be confirmed by reading them to the PLC using the F161_MRD_STATUS instruction. Check X6/X7 to see whether or not there are errors in each receive buffer during multiple reception. |
Program controlled communication (Reception) |
XB |
XD |
Setting error |
Operation mode switch setting error Usage restrictions for the unit |
All operation modes |
XE |
XF |
CH reset done |
Communication channels can be reset by turning on Y1E or Y1F. The flag is reset upon completion. At completion: 1 When Y1E/Y1F is off: 0 |
Program controlled communication |
1) |
After the F161_MRCV instruction has been executed, this flag is effective until one of the following instructions is executed.
|
2) |
When the transmission is completed within one scan, it may not be 0. |