小弟用S7-200的端口485通讯，读几台仪表的数据，当一台仪表发送完命令，但仪表故障，没有响应，我的程序就运行不下去，PLC通讯无反应，一直在发送数据，不接收，报警同时发送和接受，哪位高手指点指点

主程序

Network 1

// 端口0

LD SM0.1

CALL SBR14

Network 2

LD SM0.0

CALL SBR26

Network 3

LD M0.1

EU

MOVB VB300, VB250

MOVB VB301, VB251

MOVB VB302, VB252

MOVB VB303, VB253

MOVB VB304, VB254

MOVB VB305, VB255

MOVB VB306, VB256

MOVB VB307, VB257

MOVB VB308, VB258

MOVB VB309, VB259

MOVB VB310, VB260

MOVB VB311, VB261

Network 4

初始化

TITLE=子程序注释

Network 1

LD SM0.0

MOVW 1, VW22

R M9.5, 1

Network 2

LD SM0.0

MOVB 16#09, SMB30

MOVB 250, SMB94

MOVW 0, SMW90

MOVW 5, SMW92

MOVB 2#10010100, SMB87

ATCH INT3, 9

ATCH INT4, 23

ENI

接收和发送程序

TITLE=

Network 1

LDN SM0.1

TON T41, VW22

Network 2

LD T41

EU

= M9.5

Network 3 // 网络标题

// 网络注释

LD M9.5

A M14.0

EU

R SM87.7, 1

R M9.5, 1

RCV VB1100, 0

XMT VB230, 0

R M9.5, 1

Network 4 // 网络标题

// 网络注释

LD M9.5

A M14.1

EU

R SM87.7, 1

R M9.5, 1

XMT VB240, 0

R M9.5, 1

Network 5 // 网络标题

// 网络注释

LD M9.5

A M14.2

EU

R SM87.7, 1

R M9.5, 1

XMT VB250, 0

R M14.2, 1

R M9.5, 1

Network 6 // 网络标题

// 网络注释

LD M9.5

A M14.3

EU

R SM87.7, 1

R M9.5, 1

XMT VB270, 0

R M9.5, 1

Network 7 // 网络标题

// 网络注释

LD M9.5

A M14.4

EU

R SM87.7, 1

R M9.5, 1

XMT VB250, 0

R M9.5, 1

Network 8

Network 9 // 网络标题

// 网络注释

LD M9.5

EU

RCV VB1100, 0

Network 10

LD T41

R T41, 1

Network 11

LD SM87.7

A M9.5

TON T101, 10

A T101

EU

DTCH 23

DTCH 9

R SM87.0, 1

R M9.5, 1

ENI

发送完成中断

TITLE=中断程序注释

Network 1

LD SM0.0

A M14.0

S M9.5, 1

S SM87.7, 1

R M14.0, 1

Network 2

LD SM0.0

A M14.1

S M9.5, 1

S SM87.7, 1

R M14.1, 1

Network 3

LD SM0.0

A M14.3

S M9.5, 1

S SM87.7, 1

R M14.3, 1

Network 4

LD SM0.0

A M14.4

S M9.5, 1

S SM87.7, 1

R M14.4, 1

接收完成中断

Network 1 // 网络标题

// 网络注释

LD SM0.0

R M9