scrinunit46
Lifetime Supporting Member
Dear All
I am currently trying to configure my S7-1500 CPU to read a 4-20mA value at channel 1 Analog Input Card Module (6ES7531-7KF00-0AB0) 4 wire transducer type and display it on a scada screen.
My network are as follow
S7-1500 CPU+PS 24VDC connect with Distributed IO ET200MP Interface Module Profinet via Switch network hub. The ET200MP also has various module connected to it such as 6ES7531-7KF00-0AB0 8AI Card and a 8DI & 8DQ card.
My Problem face are as follow
TIA Portal analog input show a constant 32767 (prior NORM_X and SCALE_X) regardless if there is an 4-20mA value injected into channel 1 or not. Apparently I am facing issue with "Supply Voltage Missing" at Channel 1 which according to diagnostic show "No Supply Voltage at L+" (the LED indicator of channel 1 will blink red)
Attachment show 3 picture, the first picture shows the connection of an 4-20mA injector inject into channel 1. The 2nd picture shows the measured 24VDC from point L+(41,42) M(43 & 44) thus providing necessary power to analog module.
Has any one face the issue where either one of AI channel has a "No Supply Voltage at L+" error even though there L+ and M are connected (shown in attachment 2 with multimeter) if so what are your remedy on how to resolve TIA not able read the analog input channel.
I have check with a multimeter there is an 4-20mA value injected from the injector
Please reply as soon as possible
Thanks in Advance
Brandon
I am currently trying to configure my S7-1500 CPU to read a 4-20mA value at channel 1 Analog Input Card Module (6ES7531-7KF00-0AB0) 4 wire transducer type and display it on a scada screen.
My network are as follow
S7-1500 CPU+PS 24VDC connect with Distributed IO ET200MP Interface Module Profinet via Switch network hub. The ET200MP also has various module connected to it such as 6ES7531-7KF00-0AB0 8AI Card and a 8DI & 8DQ card.
My Problem face are as follow
TIA Portal analog input show a constant 32767 (prior NORM_X and SCALE_X) regardless if there is an 4-20mA value injected into channel 1 or not. Apparently I am facing issue with "Supply Voltage Missing" at Channel 1 which according to diagnostic show "No Supply Voltage at L+" (the LED indicator of channel 1 will blink red)
Attachment show 3 picture, the first picture shows the connection of an 4-20mA injector inject into channel 1. The 2nd picture shows the measured 24VDC from point L+(41,42) M(43 & 44) thus providing necessary power to analog module.
Has any one face the issue where either one of AI channel has a "No Supply Voltage at L+" error even though there L+ and M are connected (shown in attachment 2 with multimeter) if so what are your remedy on how to resolve TIA not able read the analog input channel.
I have check with a multimeter there is an 4-20mA value injected from the injector
Please reply as soon as possible
Thanks in Advance
Brandon