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Wiki source code of LCM-16EX

Version 3.1 by Jim(Forgotten) on 2023/01/07 10:36
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1 = **1 Naming rule** =
2
3 Naming rule of LCM I/O input expansion module:
4
5 (% style="text-align:center" %)
6 [[image:LCM-16EX User manual_html_ebe98bcd646c1f95.png||height="73" width="200" class="img-thumbnail"]]
7
8 1. WECON PLC series;
9 1. Input points No.
10 1. Product type, E means expansion;
11 1. Expansion input(X);
12
13 = **2 Dimensions** =
14
15 (% style="text-align:center" %)
16 [[image:LCM-16EX User manual_html_68c5a29b5500b36c.png||height="331" width="800" class="img-thumbnail"]]
17
18 1. Input indicator for each channel
19 1. LINK: RS485 communication state
20 1. 485 communication terminal
21 1. Module power DC24V
22 1. Extension module name
23 1. Analog signal input terminal
24 1. DIN rail mounting slot
25 1. DIN rail hook
26 1. Mounting holes (φ4.5)
27
28 (% style="text-align:center" %)
29 [[image:LCM-16EX User manual_html_af08a5d98d9f129d.png||height="468" width="700" class="img-thumbnail"]]
30
31 (% border="1" class="table-bordered" %)
32 |**Name**|**Description**|**Led states**|**Event state**
33 |(% rowspan="3" %)LINK|(% rowspan="3" %)RS485 communication states|Led Blink|Normal communication
34 |Led OFF|Communication exception, stop, or failure
35 |Led ON|Abnormal software operation or hardware failure
36
37 == **2.1 Crimp terminations** ==
38
39 (((
40 * Please use crimp terminals as indicated on the graph.
41 * The tightening torque should be applied 5 to 8 Kg.cm.
42 * Other terminals should be empty but only wiring terminals mention in this manual.
43
44 (% style="text-align:center" %)
45 [[image:LCM-16EX User manual_html_5bc4b53029347d0f.png||height="147" width="300" class="img-thumbnail"]]
46 )))
47
48 = **3 Input specification** =
49
50 (% border="1" class="table-bordered" %)
51 |**Item**|**DC input**
52 |Mode|LCM-16EX
53 |Output circuit|[[image:image-20230107103618-2.png||height="432" width="263"]](((
54
55 )))
56 |Input voltage|DC ± 24V ± 10% *1
57 |Input current|5mA/ DC 24V
58 |Input ON current|More than 3.5mA
59 |Input OFF current|Less than 1.5mA
60 |(% rowspan="2" %)Input response time|About 10ms
61 |X0~~X7 built-in digital filter
62 |Input signal|Contactor NPN or PNP
63 |Circuit insulation|Photo-coupling
64 |LED|Lights when input is energized
65
66 *1 DC Power,follow the power supply voltage range of each unit
67
68 = **4 Modbus communication** =
69
70 == **4.1 Com port communication configuration** ==
71
72 (% border="1" %)
73 |(% colspan="2" %)**Com port comm. configuration**
74 |Station No.|1~~32 (Adjust by DIP switch)
75 |Baud rate|9600~~115200 (Adjust by DIP switch)
76 |Stop bit|1
77 |Data bit|8
78 |parity|even
79
80 == **4.2 Module communication mode (function code)** ==
81
82 LCM-16EX communication with coil :01(read coil), 05(write signal coil), 15(write continuous coils)
83
84 **1.0x01(Read coil)**
85
86 Request (by Master)
87
88 (% border="1" %)
89 |Slave Station|1 byte|Slave station
90 |Function code|1 byte|0x01
91 |Start address|2 byte|0x0000 to 0x000F
92 |Coil address No.|2 byte|1 to 16
93 |CRC|2 byte|CRC
94
95 Response (by slave)
96
97 (% border="1" %)
98 |Slave station|1 byte|Slave station
99 |Function code|1 byte|0x01
100 |Byte No.|1 byte|N
101 |Coil states|N byte|n=N or N+1
102 |CRC|2 byte|CRC
103
104 N=Output number/8, if remainder is not equal to 0, then N=N+1
105
106 Error (Slave respond)
107
108 (% border="1" %)
109 |Slave station|1 byte|Slave station
110 |Error code|1 byte|0x81
111 |Exception code|1 byte|(((
112 01 (cannot support this function)
113
114 02 (Address crossing domain)
115 )))
116 |CRC|2 byte|CRC
117
118 Example: read 0x0000-0x0007 coils address
119
120 (% border="1" %)
121 |(% colspan="2" %)**Request (by Master)**|(% colspan="2" %)**Respond(By slave)**
122 |Slave|0A|Slave|0A
123 |Function code|01|Function code|01
124 |Coil high start address|00|Byte No.|01
125 |Coil low start address|00|Output states (0-7)|FF
126 |Read number (High 8 bits)|00|CRC Low bit|13
127 |Read number (Low 8 bits)|08|CRC High bit|EC
128 |CRC Low bit|B7| |
129 |CRC High bit|3C| |
130
131 **2.0x05(Write signal coil)**
132
133 Request (By Master)
134
135 (% border="1" %)
136 |Slave station|1 byte|Slave station
137 |Function code|1 byte|0x05
138 |Output address|2 byte|0x0000 to 0x000F
139 |Output value|2 byte|0x0000(Write 0) or 0xFF00 (Write 1)
140 |CRC|2 byte|CRC
141
142 Respond (By Slave)
143
144 (% border="1" %)
145 |Slave station|1 byte|Slave station
146 |Function code|1 byte|0x05
147 |Output address|2 byte|0x0000 to 0x000F
148 |Output value|2 byte|0x0000 or 0xFF00
149 |CRC|2 byte|CRC
150
151 Error Respond (By Slave)
152
153 (% border="1" %)
154 |Slave station|1 byte|Slave station
155 |Error code|1 byte|0x85
156 |Exception code|1 byte|(((
157 01 (cannot support this function code)
158
159 02 (Address crossing domain)
160 )))
161 |CRC|2 byte|CRC
162
163 Example: write 0x000 address coil
164
165 (% border="1" %)
166 |(% colspan="2" %)**Request(by master)**|(% colspan="2" %)**Respond(by slave)**
167 |Slave Station|0A|Slave station|0A
168 |Function code|05|Function code|05
169 |Coil high start address|00|Coil high start address|00
170 |Coil low start address|00|Coil low start address|00
171 |Write number(High 8 bits)|FF|Write number(High 8 bits)|FF
172 |Write number(Low 8 bits)|00|Write number(Low 8 bits)|00
173 |CRC Low bit|BD| |BD
174 |CRC High bit|41| |41
175
176 **3.0x0F (Write continuous coil)**
177
178 Request (by Master)
179
180 (% border="1" %)
181 |Slave station|1 byte|Slave station
182 |Function code|1 byte|0x0F
183 |Start address|2 byte|0x0000 to 0x000F
184 |Output number|2 byte|1 to 16
185 |Byte number|1 byte|N
186 |Output value|N*1 byte|
187 |CRC|2 byte|CRC
188
189 N=Output value/8,if remainder is not equal to 0,then N=N+1
190
191 Respond (by slave)
192
193 (% border="1" %)
194 |Slave station|1 byte|Slave station
195 |Function code|1 byte|0x0F
196 |Start address|2 byte|0x0000 to 0x000F
197 |Output value|2 byte|1 to 16
198 |CRC|2 byte|CRC
199
200 Error Respond (By Slave)
201
202 (% border="1" %)
203 |Slave station|1 byte|Slave station
204 |Error code|1 byte|0x8F
205 |Exception code|1 byte|(((
206 01 (can not support this function code)
207
208 02 (Address crossing domain)
209 )))
210 |CRC|2 byte|CRC
211
212 Example: Write 0x0000 address to 0x0007 coil
213
214 (% border="1" %)
215 |(% colspan="2" %)**Master request**|(% colspan="2" %)**Slave respond**
216 |Slave station|0A|Slave station|0A
217 |Function code|0F|Function code|0F
218 |Coil high start address|00|Coil high start address|00
219 |Coil low start address|00|Coil low start address|00
220 |Operations number high 8 bit|00|Operations number high 8 bit|00
221 |Operations number low 8 bit|08|Operations number low 8 bit|08
222 |Byte number|01|CRC low bit|55
223 |Write number|88|CRC high bit|76
224 |CRC low bit|40| |
225 |CRC high bit|BF| |
226
227 == **4.3 Introduction of DIP switch** ==
228
229 **1.DIP switch introduction**
230
231 (% style="text-align:center" %)
232 [[image:LCM-16EX User manual_html_93aa56002bebd679.png||height="191" width="400" class="img-thumbnail"]]
233
234
235 (% style="text-align:center" %)
236 [[image:LCM-16EX User manual_html_79b07e8411c992f6.png||height="817" width="600" class="img-thumbnail"]]
237
238 Figure 4‑1 DIP switch
239
240 **✎Note: **
241
242 In practical use, the dial switch is ON (1) downward and OFF (0) upward. As shown in the figure, the status of the DIP switch is downward, all are ON.
243
244 **2.DIP switch and station setting**
245
246 In practical use, the # 1 to # 5 of the DIP switch is used for the selection of the module station number, and the relationship between the station number and the 1 # 5 dial number switch is shown in the following table:
247
248 (% border="1" %)
249 |**#1 DIP switch**|**#2 DIP switch**|**#3 DIP switch**|**#4 DIP switch**|**#5 DIP switch**|**Module station**
250 |0|0|0|0|0|1
251 |1|0|0|0|0|2
252 |0|1|0|0|0|3
253 |1|1|0|0|0|4
254 |0|0|1|0|0|5
255 |1|0|1|0|0|6
256 |0|1|1|0|0|7
257 |1|1|1|0|0|8
258 |0|0|0|1|0|9
259 |1|0|0|1|0|10
260 |0|1|0|1|0|11
261 |1|1|0|1|0|12
262 |0|0|1|1|0|13
263 |1|0|1|1|0|14
264 |0|1|1|1|0|15
265 |1|1|1|1|0|16
266 |0|0|0|0|1|17
267 |1|0|0|0|1|18
268 |0|1|0|0|1|19
269 |1|1|0|0|1|20
270 |0|0|1|0|1|21
271 |1|0|1|0|1|22
272 |0|1|1|0|1|23
273 |1|1|1|0|1|24
274 |0|0|0|1|1|25
275 |1|0|0|1|1|25
276 |0|1|0|1|1|27
277 |1|1|0|1|1|28
278 |0|0|1|1|1|29
279 |1|0|1|1|1|30
280 |0|1|1|1|1|31
281 |1|1|1|1|1|32
282
283 **3.DIP switch and baud rate setting**
284
285 In practical use, the #6 to #8 of the DIP switch are used for the selection of the baud rate, and the relationship between the baud rate and #6-# 8 DIP switch is shown in the following table:
286
287 (% border="1" %)
288 |**#6 DIP switch**|**#7 DIP switch**|**#8 DIP switch**|**Module baud rate**
289 |0|0|0|115200
290 |1|0|0|57600
291 |0|1|0|38400
292 |1|1|0|19200
293 |0|0|1|9600
294 |1|0|1|Reserved for later expansion (Default: 115200)
295 |0|1|1|Reserved for later expansion (Default: 115200)
296 |1|1|1|Reserved for later expansion (Default: 115200)
297
298 == **4.4 Note** ==
299
300 Communication function are different between LCM-16EX module and LX3V-16EX module,but register function is same.
301
302 (% border="1" %)
303 |Module|Maximum accessible address(BFM address)
304 |16EX|15(input terminal)
305
306 = **5 Example** =
307
308 Set DIP switch according to 4.2 section introduces, the module station is 2, and baud rate is 115200. The 16 input terminal of the LCM-16EX module are mapped to M10~~M25.
309
310 (% style="text-align:center" %)
311 [[image:LCM-16EX User manual_html_da1804bfa712cd21.png||height="521" width="700" class="img-thumbnail"]]
312
313 **Project explanation**
314
315 1)Step 0~~16: This is for setting communication protocol and communication parameters;
316
317 * Set PLC com2 as Modbus Master;
318 * Set stop bit =1, data bit=8, Even parity, baud rate=115200(Please check detail in PLC COM2 Modbus setting manual)
319
320 2)Step 16~~47: 16 input terminal of the LCM-16EX module are mapped to M10~~M25