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主營(yíng)產(chǎn)品: 集散式控制系統(tǒng), 可編程控制系統(tǒng), 伺服系統(tǒng), 機(jī)器人系統(tǒng)
PTQ-AFC-PROSOFT量子液體和氣體流量計(jì)算機(jī)
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訂貨量(個(gè))
¥13500.00
≥2
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福建省廈門市
主營(yíng)產(chǎn)品
PTQ-AFC PROSOFT量子液體和氣體流量計(jì)算機(jī)
PTQ-AFC PROSOFT量子液體和氣體流量計(jì)算機(jī)
咱們有一項(xiàng)工程,PLC端口燒壞。PLC通訊線是經(jīng)過(guò)滑環(huán)引出的。考慮到前幾天剛下過(guò)雨,懷疑是滑環(huán)進(jìn)水導(dǎo)致的PLC通訊線短路,而燒壞PLC端口的。用搖表測(cè)量通訊線(線路兩頭均懸空),發(fā)現(xiàn)通訊線間有電阻,正常時(shí)應(yīng)為無(wú)窮大,而測(cè)量時(shí),電阻在5M~10M之間。然后確定PLC端口燒壞是滑環(huán)進(jìn)水形成的,替換滑環(huán)后正常。
2.盡量防止屢次調(diào)用同一子程序
在程序中,屢次調(diào)用同一個(gè)子程序,在語(yǔ)法方面沒(méi)有什么錯(cuò)誤,但咱們要盡量防止這一做法,尤其是在帶有形式參數(shù)時(shí)。
3.PLC輸入的線間電容導(dǎo)致的誤動(dòng)作
電纜的各導(dǎo)線間都存在電容,合格的電纜能把此容值約束在一定范圍以內(nèi)。即是合格的電纜,當(dāng)電纜長(zhǎng)度超越一定長(zhǎng)度時(shí),各線間的電容容值也會(huì)超越所請(qǐng)求的值,當(dāng)把此電纜用于PLC輸入時(shí),線間電容就有可能導(dǎo)致PLC的誤動(dòng)作,會(huì)呈現(xiàn)很多無(wú)法了解的現(xiàn)象。主要為:MVI71-GSC - PROSOFT - COMMUNICATION MODULE ASCII
PS-8790-33 - PROSOFT - CONFIGURATION SERVICE FOR 250 POINT GATEWAYMVI56-WA-EIP - PROSOFT - COMMUNICATION MODULE WIRELESS ETHERNET
5601-RIO-DFCM - PROSOFT - A-B REMOTE I/O ADAPTER TO DF1 MASTER/SLAVE
5201-DFNT-ISDA - PROSOFT - ETHERNET/IP TO ISHIDA CCW WEIGHSCALE
5201-DFNT-PNPM - PROSOFT - ETHERNET/IP TO PHANTOM NETWORK PROTOCOL MASTER
5201-MNET-BSCH - PROSOFT - MODBUS TCP/IP TO BOSCH PACKAGE MACHINERY
5201-DFNT-BACNET - PROSOFT - ETHERNET/IP TO BACNET/IP CLIENT GATEWAY
MVI46-ADM - PROSOFT - C PROGRAMMABLE APPLICATION DEVELOPMENT MODULE - 2 SERIAL PORTS
RLX2-IHA-A - PROSOFT - 802.11A INDUSTRIAL HOTSPOT HIGH POWER, EXT TEMP, INCLUDES 2DBI STUB ANTENNA FCC TYPE APPROVAL RULES
RLX2-IHA-E - PROSOFT - 802.11A INDUSTRIAL HOTSPOT HIGH POWER, EXT TEMP, INCLUDES 2DBI STUB ANTENNA CE TYPE APPROVAL RULES
RLX2-IHG-E - PROSOFT - 802.11G INDUSTRIAL HOTSPOT HIGH POWER, EXT TEMP, INCLUDES 2DBI STUB ANTENNA CE TYPE APPROVAL RULES
MVI46-GSC - PROSOFT - GENERIC ASCII SERIAL COMMUNICATION MODULE
MVI56E-MCM - PROSOFT - MODBUS MASTER/SLAVE SERIAL ENHANCED COMMUNICATION MODULE
MVI46 - PROSOFT - COMMUNICATION MODULE 800MA 5.1VDC
MVI56-PDPS - PROSOFT - PROFIBUS DP SLAVE COMMUNICATION MODULE
5303-MBP-MNET - PROSOFT - MODBUS PLUS TO MODBUS TCP/IP
5202-DFNT-MCM4 - PROSOFT - ETHERNET/IP TO MODBUS MASTER/SLAVE 4 PORTS
MVI46-PDPMV1 - PROSOFT - PROFIBUS DP V1 COMMUNICATION MODULE
MVI46-DCFM - PROSOFT - MODULE MULTI-VENDOR INTERFACE A-B SLC500
4202-DFNT-MCM4 - PROSOFT - COMMUNICATION MODULE ETHERNET/IP
MVI56-PDPMV1 - PROSOFT - COMMUNICATIONS MODULE PROFIBUS DPV1 MASTER
MVI56-ADM - PROSOFT - C PROGRAMMABLE APPLICATION DEVELOPMENT MODULE - 2 SERIAL PORTS
3250-L532M - PROSOFT - RTU-5/03 SLC-5/03 PROCESSOR W/MODBUS SLAVE ON CH0
PS3250-L532M - PROSOFT - PROCESSOR W/MODBUS SLAVE ON CH0
MVI69-104S - PROSOFT - COMMUNICATIONS MODULE 2SERIAL/1 ETHERNET PORTS
MVI69-PDPMV1 - PROSOFT - PROFIBUS DPV1 MASTER COMMUNICATION MODULE
MVI69-MCM - PROSOFT - MODBUS MASTER/SLAVE SERIAL COMMUNICATION MODULE
5102-DFCM-ASCII3 - PROSOFT - SERIAL PROTOCOL GATEWAY MASTER/SLAVE ASCII 3PORT
MVI69-DFNT - PROSOFT - ETHERNET/IP COMMUNICATION MODULE
5201-DFNT-MCM - PROSOFT - ETHERNET IP MODBUS MASTER SLAVE GATEWAY 18-32VDC