长期回收以下型号：



UPA2724UT1A-E2

UPA2735GR

UPA2736GR

UPA2737GR

UPA2738GR

UPA2739T1A

UPA2761UGR-E1-AT

UPA2764T1A

UPA2765T1A

UPA2766T1A

UPA2794GR

UPA2812T1L

UPA2813T1L

UPA2814T1S

UPA2815T1S

UPA2816T1S

UPA2820T1S

UPA2821T1L

UPA2822T1L

UPA2825T1S

UPA2826T1S

UPA2830T1L

UPA2831T1L

UPA2832T1S

UPA2987GS-E1

UPA3711T1A

UPA3753GR

UPA502CT

UPA503CT

UPA573CT

UPA602CT

UPA603CT

UPA677TB

UPA678TB

UPA679TB

UPC1251AG2

UPC1251AGR

UPC1251AMP

UPC1251G2

UPC1251GR

UPC1251MP

UPC1458G2

UPC177G2

UPC177GR

UPC251G2

UPC258G2

UPC259G2

UPC271G2

UPC272G2

UPC277G2

UPC277GR

UPC277MP

UPC311G2

UPC319G2

UPC324G2

UPC324GR

UPC339G2

UPC339GR

UPC3403G2

UPC358G2

UPC358GR

UPC358MF

UPC393G2

UPC393GR

UPC393MF

UP062G2

UP064G2

UP072G2

UP072MF

UP074G2

UP082G2

UP092G2

UP094G2

UP51AG2

UP51AGR

UP51G2

UP51GR

UP52G2

UP558G2

UP558MF

UP560G2

UP570G2

UP570GR

UP570HA-A/JC

UP570MF

UP572G2

UP572MF

UP574G2

UP574GR

UP58G2

UP741G2

UP742G2

UP742GR

UP742MF

UP744G2

UP744GR

UPC802G2

UPC811G2

UPC812G2

UPC813G2

UPC814G2

UPC822G2

UPC8236T6N-E2

UPC824G2

UPC832G2

UPC834G2

UPC835MN

UPC842AMP

UPC842G2

UPC842GR

UPC844G2

UPC844GR

UPD166014T1K

UPD166023T1J

UPD166025T1J

UPD166027T1J

UPD166029T1J

UPD166031AT1U

UPD166032T1U

UPD166033T1U

UPD166034T1U

UPD166035GR

UPD166036GR

UPD166037T1J

UPD166038T1J

UPD166105GS

UPD166108GR

UPD179322AGB-8ET-A

UPD179326GB-8ET-A

UPD179327GB-8ET-A

UPD179F110MC-CAB-AX

UPD179F111MC-CAB-AX

UPD179F112MC-CAB-AX

UPD179F114MC-CAB-AX

UPD17P202AGF

UPD350DT-I/Q8X

UPD48576118F1-E18-DW1-A

UPD48576118F1-E24-DW1-A

UPD48576209F1-E24-DW1-A

UPD48576218F1-E18-DW1-A

UPD48576218F1-E24-DW1-A

UPD48576236F1-E18-DW1-A

UPD48576236F1-E24-DW1-A

UPD703101AGJ-33-UEN-A

UPD703102GJ-33-UEN-A

UPD703111AGM-10-UEU-A

UPD703111AGM-15-UEU-A

UPD703111BGM-06-UEU-A

UPD703111BGM-10-UEU-A

UPD703111BGM-13-UEU-A

UPD703111BGM-15-UEU-A

UPD703111GM-10-UEU-A

UPD703111GM-13-UEU-A

UPD703111GM-15-UEU-A

UPD703114GC(A)-8EU-A

UPD703114GC-8EU-A

UPD703114GF-3BA-A

UPD703116GJ(A)-UEN-A

UPD703116GJ(A1)-UEN-A

UPD703116GJ-UEN-A

UPD703131AYGJ-UEN-A

UPD703132AYGJ-UEN-A

UPD703136AGJ-UEN-A

UPD703136AYGJ-UEN-A

UPD703185GF-3BA-A

UPD703220GC-9EB-A

UPD703228GC-8EU-A

UPD703230AGB(A)-8EU-A

UPD703230AGB(A)-GAH-AX

UPD703230AGB(A1)-8EU-A

UPD703230AGB(A1)-GAH-AX

UPD703230AGB(A2)-8EU-A

UPD703230AGB(A2)-GAH-AX

UPD703230BGB(A)-GAH-AX

UPD703230BGB(A1)-GAH-AX

UPD703230BGB(A2)-GAH-AX

UPD703230GB(A)-GAH-AX

UPD703230GB(A1)-8EU-A

UPD703230GB(A1)-GAH-AX

UPD703230GB(A2)-GAH-AX

UPD703231AGB(A)-GAH-AX

UPD703231AGB(A1)-8EU-A

UPD703231AGB(A1)-GAH-AX

UPD703231AGB(A2)-8EU-A

UPD703231AGB(A2)-GAH-AX

UPD703231BGB(A)-GAH-AX

UPD703231BGB(A1)-GAH-AX

UPD703231BGB(A2)-GAH-AX

UPD703231GB(A)-GAH-AX

UPD703231GB(A1)-GAH-AX

UPD703232AGK(A1)-9EU-A

UPD703232AGK(A1)-GAK-AX

UPD703232AGK(A2)-9EU-A

UPD703232AGK(A2)-GAK-AX

UPD703232BGK(A)-GAK-AX

UPD703232BGK(A1)-GAK-AX

UPD703232BGK(A2)-GAK-AX

UPD703232GK(A)-9EU-A

UPD703232GK(A1)-GAK-AX

UPD703232GK(A2)-GAK-AX

UPD703233AGK(A)-9EU-A

UPD703233AGK(A)-GAK-AX

UPD703233AGK(A1)-9EU-A

UPD703233AGK(A1)-GAK-AX

UPD703233AGK(A2)-9EU-A

UPD703233AGK(A2)-GAK-AX

UPD703233BGK(A)-GAK-AX

UPD703233BGK(A1)-GAK-AX

UPD703233BGK(A2)-GAK-AX

UPD703233GK(A1)-GAK-AX

UPD703233GK(A2)-GAK-AX

UPD703234AGC(A)-8EA-A

UPD703234AGC(A)-UEU-AX

UPD703234AGC(A1)-8EA-A

UPD703234AGC(A1)-UEU-AX

UPD703234AGC(A2)-8EA-A

UPD703234AGC(A2)-UEU-AX

UPD703234BGC(A1)-UEU-AX

UPD703234BGC(A2)-UEU-AX

UPD703234GC(A)-UEU-AX

UPD703234GC(A1)-8EA-A

UPD703234GC(A1)-UEU-AX

UPD703234GC(A2)-UEU-AX

UPD703235AGC(A1)-8EA-A

并行通信与串行通信数据通信主要有并行通信和串行通信两种方式。并行通信是以字节或字为单位的数据传输方式，除了8根或16根数据线、一根公共线外，还需要数据通信联络用的控制线。并行通信的传送速度快，但是传输线的根数多，成本高，一般用于近距离的数据传送。并行通信一般用于PLC的内部，如PLC内部元件之间、PLC主机与扩展模块之间或近距离智能模块之间的数据通信。串行通信是以二进制的位（bit）为单位的数据传输方式，每次只传送一位，除了地线外，在一个数据传输方向上只需要一根数据线，这根线既作为数据线又作为通信联络控制线，数据和联络信号在这根线上按位进行传送。