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he RS232C interface block FX2N-232IF (hereinafter referred to as "232IF") is connected to the FX2N/
X2NC/FX3U/FX3UC series PLC to realize full duplex serial data communication with another RS232C
terface such as a personal computer, bar code reader, printer, etc.
Two or more devices with RS232C interfaces can be connected to an FX2N/FX2NC/FX3U/FX3UC series
PLC by using the RS232C special function block. Up to 8 special function block can be connected to
the FX2N/FX3U/FX3UC*1
series PLC. Up to 4 special function block can be connected to the FX2NC
PLC. (Refer to section 2.1)
Communication requires no protocol
Full-duplex asynchronous communication between RS232C devices is specified through buffer mem-
ory (BFM). The FROM/TO instruction is used for the buffer memory.
The send/receive buffer can accommodate 512 bytes/256 words.
When the RS232C interlink connection mode is used, data exceeding 512 bytes/256 words can also
can be received.
ASCII/HEX conversion function
The function to convert and send and a hexadecimal numeric (0 to F) saved in the send data buffer as
well as the function to convert a received ASCII code into a hexadecimal numeric (0 to F) and save it
to the receive buffer are provided.
1 Up to 7 special function block can be connected to the FX3UC-32MT-LT PLC
PLC FX2N-48MR-ES/UL
RS-422擴展板 FX2N-422-BD
CC-Link用主站模塊 FX2N-16CCL-M
PLC FX2N-32MR-ES/UL
PLC FX2N-16MS
PLC FX2N-16MR-D
模擬量輸入模塊 FX2N-8AD
PLC FX2N-32MT-D
晶體管輸出模塊 FX2N-16EYT-C
PLC FX2N-48MR-UA1/UL
PLC FX2N-64MR-UA1/UL
晶體管輸出單元 FX2N-48ET
擴展模塊 FX2N-2AD
擴展模塊 FX2N-2DA
PLC FX2N-32MT-ES/UL
PLC FX2N-80MR-DS
輸入模塊 FX2N-16EX-C
PLC FX2N-64MT-ESS/UL
PLC FX2N-128MT-001
CC-Link用接口模塊 FX2N-32CCL
PLC FX2N-128MR-ES/UL
RS-232C擴展板 FX2N-232-BD
繼電器輸出單元 FX2N-48ER-UA1/UL
輸出模塊 FX2N-16EYR-ES/UL
擴展模塊 FX2N-4DA
輸入輸出模塊 FX2N-8ER-ES/UL
晶體管輸出模塊 FX2N-16EYT
PLC FX2N-80MT-D
PLC FX2N-80MR-ES/UL
脈沖輸出模塊 FX2N-1PG-E