方案三：重新设计的硬件系统如模块化结构再加上软逻辑软件，使其硬可靠性与PLC完全相同。从上面的方案一看，在一些特殊的应用场合有一部分市场，主要是在运控、图像、显示方面有其很大的优点；方案二是一个很保守的做法，但成本方面比较高；方案三其实已经是一个PLC了。

1FK6063-6AF71-1TG2
1FK6063-6AF71-1SA0
1FK6063-6AF71-1EB0
1FK6063-6AF71-1EG0
1FK6083-6AF71-1AB2-Z
1F1FK6083-6AF71-1TH0
1FK6042-6AF71-1AH0
1FK6060-6AF71-1AH0-Z
1FK6042-6AF71-1SA0
1FK6042-6AF71-1EG0 
1FK7101- F71-1EG0 
1FK6103-8AF71-1AH0
1FK7103- F71-1EG0
1FK7061-7AF71-1EG0
1FK6060-6AF71-1EG0 
1FK7083- F71-1EG0 
1FK7061-7AF71-1FG0
1FK7044-7AF71-1FG0
1FK7060-2AF71-1CH0
1FK6042-6AF71-1TG0
1FK6101-8AF71-1AG0-Z 
1FK7042- F71-1FG0
1FK6080-6AF71-1EG0
1FK7083- F71-1EH0
1FK6083-6AF71-1TB0
1FK6060-6AF71-1EH0 
1FK6083-6AF71-1EH0
1FK6101-8AF71-1AH0-Z
1FK6060-6AF71-1TA0 
1FK6042-6AF71-1TB0
1FK6-042-6AF71-1TA0
1FK6083-6AF71-1TGO
1FK6083-6AF71-1EG2-Z 
1FK6060-6AF71-1EA0
1FK7042- F71-1EG0
V606EC20-TOUCHSCREEN 
585-H-V12
73312BN4UNJ0N0C111P3
73382BN4UNJ1N0C111C2
44C331859-G01
44D236321-G01
44C331881-G01
44A399790-G01
44C238419-G01
44C214384G01
44C238421-G01
44C331837-G01
44C331887-G01
44C372656-G01
44C238424-G01
44C331830-G01
44C372657-G01
44C331840-G01
44C238411-G01
44C742962-006G01
44A394633-G01
44C372602-G01
44C741056-G01R07
44A397809-G01
44A394683-G01
44A397896-G01 
44A398723-G01
44C741055-G01
44A294506-G01
44A294554-G01
44A391797-G01
44A399746-G01
44A390405-G01 
LP120-M01-5-111-000 
LP 090-M01-3-111-000 
LP090-M01-3-111-000
LP-090-M01-5-111-000
3HAC028357-001
3HAC031683-001
ECG-4040B
6DD1682-0AC0 
6DD1682-0BF0
6DD1682-0BE0
6DD1682-0BC0
6DD1682-0BE0
6DD1682-0BC3
6DD16820AB1
6DD1684-0CH0
6DD1683-0CH0
M471B5773DH0-CH9
6DD1607-0AA0 
6DD1-606-1AC0
WJ-HD316 
WJ-HDE500
F5-WJ-400-10M 
6K8-24411-00
WJ-HDE300
269P-100P-HI
MIFIIPA55E00H100
MGM-340-CBNS-0000
MGE-490-CBNS-0000
MGM-455-CBNS-0000
LE1502A-R3
LE1502A-R2
2098-DSD-HV220-SE
2098-DSD-HV050-SE
2098-DSD-075-SE
2098-DSD-HV030X
3RK1200-0CQ20-0AA3
6BK1100-0AA00-1AA0
6BK1-000-0CG00-0AA0 
6BK1800-0JB00-0AA0
6SN1118-0BK11-0AA0y
6BK1-700-2BA00-0AA0
6BK1800-0FA00-0AA0 
6BK1700-0BA00-0AA2
3RK1200-0CQ20-0AA3 
6ES7-921-3AA20-0AA0
6BK1700-0BA00-0AA1
6BK1000-0LA00-0AA0
6FC5403-0AA20-1AA0
6ES7921-3AA20-0AA0
6BK1000-0TB00-0AA0
6BK1800-8BM10-1AA0
6ES7 921-3AA20-0AA0
6AV7661-4AA03-0BK0
6ES7 290-6AA20-0XA0
6SN1118-0BK11-0AA0
6ES7193-CB20-0AA0
6ES7 228-1RC51-0AA0
6FC5403-0AA20-0AA0
6ES7272-0AA20-0YA0
PS142-003-010SH
GP7-U142A-10-00
PS142-005-SD 
BMS-0606-143PS
1392-B100-RK-MC-B-D1
1392B100RKMCAF1
1392B100RKMCAHD1
1392B100RKMCBF2
1392A040RAMCBD1F
1392B040RFMCAHD1
1392B075RHMCAHD1
1392B150RLMCBF2D
1392A040RAMCBDF2
1392B150RLMCAF1
FC4A-D20RK1
3BSE017193R1
3BSE008538R1
3BSE018114R1
3BSE013230R1
3BSE013228R1
3BSE030230R1
3BSE003529R1
3BSE030192R1
3BSE018103R1
3BSE022457R1
3BSE008358R1
3BSE005235R1
3BSE008510R1
3BSE018059R1
3BSE013235R1
3BSE004939R1
3BSE006196R1
3BSE006802R1
3BSE008512R1
3BSE005715R1
3BSE018128R1
3BSE006085R1
3BSE006096R1
3BSE002224R1
3BSE008546R1
3BSE022462R1
3BSE008524R1
3BSE004086R1
3BSE001449R1
3BSE013234R1
3BSE013262R1
3BSE008538R1
3BSE005177R1
3BSE000863R1
1392-B100-RK-MC-B-D1-F2-F4
1392-B100-RK-MC-B-F2-D1-F4 
1392-B100-RK-MC-D1-F2-F4
1392-B100-RK-MC-A-F1
1392-B100-RK-MC-C2-A-F1-F3
1392-B100-RK-MC-C2-F3-A-F1
1392-B100-RK-MC-B-D1
1392-B100-RK-MC-A-H-D1
1.5 数控系数控系统的实现目前也有好几种方案：方案一：通用PLC带数控功能这对于需要逻辑控制又需要相对简单的位置控制的用户来说是一个很好的选择，无论是成本和开发都有很多优势，不过通用型的PLC大多没有联动和插补指令（部分产品有），并且不支持G代码，无法与CAD软件进行接口。
WJ-HDE300
WJ-HD316
WJ-HDE500 
AH12-4-FF-SF2-60
6K8-24411-00
TJ65-CU-030GE
TJ65-DT-030TK 
A06B6096H104
A06B-6050-H104
A06B-6114-H104
A06B-6089-H104
A06B-6096-H104
A06B-6117-H104
A06B-0115-B275 
A06B-0115-B103
A06B-0115-B275
A06B-0377-B175
A06B-0142-B175
A06B-0371-B175 
A06B-0123-B175
A06B-0147-B175
A06B-0115-B804
A06B-0162-B175
5785K-PMPP-5000
1FK7032- K71-1SH0
1FK7022- K71-7TG0 
1FK7040- K71-1FG0
1FK7042- K71-1TH3-ZS29
1FK6041-4AK71-4AG0
1FK7040- K71-1EB0 
1FK6032-6AK71-1TH0
1FK7032- K71-1TH2
1FK7042- K71-1FGO
1FK7042- K71-1DGO
1FK7040- K71-1SU5
1FK6040-6AK71-1EG0
1FK6040-6AK71-1TG0
1FK6042-6AK71-1TG0
1FK7022- K71-1UG5
1FK7022- K71-1LA3
1FK7022- K71-1LB3
1FK7022- K71-1HB0
1FK7040- K71-1FH2
1FK7040- K71-1EH3
1FK7042- K71-1FB0
1FK7034- K71-1HH0
200ZT-24TP0F0-A
ZT-89CT90
ZT8952-D2 
8955-S240-SCSI-2
ZT8952 -S167
ZT8952-D7
ZT-8902
ZT-8842
6SN1124-1AA00-0LA1
6SN1124-1AA00-0LA3
6SN1124-1AA00-0LA2 
6SN1124-1AA00-0DA1
6SN1124-1AA00-0JA0 
6SN1124-1AA00-0CA0
6SN1124-1AA00-0EA0 
6SN1124-1AA00-0DA0 
6SN1124-1AA00-0GA0 
6SN1124-1AA00-0KA0 
6SN1124-1AA00-0DA1
6SN1124-1AA00-0HA1
6SN1124-1AA00-0BA1
6SN1124-1AA00-0EA1
6SN1124-1AA00-0CA1
6SN1123-1AA00-0LA3
6SN1123-1AA00-0LA1