Endress+Hauser Proline Promag H 300 - Page 23

Proline Promag H 300
Endress+Hauser 23
Function blocks
Block Number
blocks
Execution times Process variables (Channel)
Resource Block
(RB)
1 This Block (extended functionality) contains
all the data that uniquely identify the device; it
is the equivalent of an electronic nameplate
for the device.
–
Analog Input
Block
(AI)
4 7 ms Process variables (AI Channel)
• Temperature (7)
• Volume flow (9)
• Mass flow (11)
• Corrected volume flow (13)
• Totalizer 1 (16)
• Totalizer 2 (17)
• Totalizer 3 (18)
• Flow velocity (37)
• Electronic temperature (39)
• Conductivity (70)
• Corrected conductivity (71)
Discrete Input
Block
(DI)
2 5 ms • Switch output state (101)
• Low flow cut off (103)
• Empty pipe detection (104)
• Status verification (105)
PID Block
(PID)
1 6 ms –
Multiple Analog
Output Block
(MAO)
1 5 ms Channel_0 (121)
• Value 1: External
compensation variable,
temperature
• Value 2: External
compensation variable,
density

The compensation
variables must be
transmitted to the device
in the SI basic units.
Multiple Digital
Output Block
(MDO)
1 5 ms Channel_DO (122)
• Value 1: Reset totalizer 1
• Value 2: Reset totalizer 2
• Value 3: Reset totalizer 3
• Value 4: Flow override
• Value 5: Start heartbeat
verification
• Value 6: Status switch output
• Value 7: Not assigned
• Value 8: Not assigned
Integrator Block
(IT)
1 6 ms –
Modbus RS485
Protocol Modbus Applications Protocol Specification V1.1
Response times • Direct data access: typically 25 to 50 ms
• Auto-scan buffer (data range): typically 3 to 5 ms
Device type Slave
Slave address range 1 to 247
Broadcast address range 0