Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
s7-200与PT650D如何通过自由协议进行通讯
问题补充：
LD SM0.1
MOVB 16#69, SMB30
MOVB 16#B0, SMB87
MOVB 16#0A, SMB89
MOVB 10, SMB90
MOVB 20, SMB94
ATCH INT_0:INT0, 9
MOVB 150, SMB34
ATCH INT_1:INT1, 10
ATCH INT_2:INT2, 23
ENI
INT0
LD SM0.0
DTCH 10
RCV VB200, 0
INT1
LD SM0.0
MOVB 16#06, VB99
MOVB 16#52, VB100
MOVB 16#45, VB101
MOVB 16#41, VB102
MOVB 16#44, VB103
MOVB 16#0D, VB104
MOVB 16#0A, VB105
XMT VB99, 0
INT2
LD SM0.0
ATCH INT_1:INT1, 10
上面程序无返回信息
PD650D 协议
READ<CR><LF>
返回 ST,GS,1234KG,<CR><LF>
最佳答案
发一个通用的通讯程序：
MAIN:
LD SM0.1
MOVB XXX , SMB30 //根据和对方约定的波特率，字符格式等设定
MOVB 16#9C, SMB87 //允许接收信息,使用SMB90值检察空闲状态,定时器是信息定时器 ， 超过SMW92值停止接收
MOVW +80, SMW92 //根据报文长短，波特率及从站响应的快慢设定，这个时间要小于接收中断（INT3）里定时中断的时间。
MOVW +0, SMW90
MOVB 200, SMB94 //SMW94 最大接收字符数,这里无用，但必须要设置。
ENI
LD SM0.1
ATCH 接收:INT3, 9 //传输完成中断
MOVB 150, SMB34
ATCH 发送:INT2, 10 //定时中断
发送：
LD SM0.0
DTCH 10
XMT VB100, 0
接收：
LD SM0.0
RCV VB200, 0
MOVB 250, SMB34
ATCH 发送:INT2, 10
1 本程序只适用于单从站的问答式规约（包括modbus）。该程序为主站程序。
2 发送的数据放置在数据块，比如读取从站地址为16#12的寄存器的数据。校验提前算好，减轻PLC负担。
VB100 16#8 16#12 16#03 16#00 16#0A 16#00 16#02 16#E6 16#AA
3 不用考虑起始字符 结束字符等等，以下是通讯流程图，不论从站有无故障，询问不受影响。
4 9600波特率，从站回复13字节
5 校验程序可以放在主程序里，
有时间再发一个多从站的程序，程序大小和这个基本程序不变。
提问者对于答案的评价：
ok
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
Warning: mysqli_query(): (HY000/1194): Table 'wp_options' is marked as crashed and should be repaired in D:\wwwroot\www.zhaoplc.com\wp-includes\class-wpdb.php on line 2357
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