Proservo
Hauser
17
Data transmission & Operation
Sakura serial pulse (V1) output is capable to transmit density profile data (both Tank profile & I/F profile
independently), operation command, & parameter setting between NMS 5/7 Proservo and NRM 571 Tank
Computer.
Enraf Bi Phase Mark Output
The bus is connected to an Enraf I/F CIU or RTU8 to transmit measured value to upper host system as Entis
(Enraf TG program) or Fuels Manager. These interface must be configured accordingly.
Termination Resistors
It is not necessary to set any termination resistors for serial pulse output.
Bus Address
Each transmitter on a signal loop has an individual bus address. This is defined within the transmitter software.
Bus Cabling
The bus cabling is electrically isolated from the transmitter and from the interface receiver. Standard
communication cable can be used for the data transmission.
Bus Topology
The suitable topologies for Enraf BPM serial pulse output are:
Serial max. resistance: 400 ohm at 3 bus loops or less (10 transmitters per 1bus loop)
Serial max. capacitance: 1 micro F or less
Data transmission & Operation
NMS 5/7 Proservo is capable to transmit following sensory data as well as gauge operation command via Enraf
BPM serial pulse output.
• Data: level, temperature, operation status
• Gauge command: STOP, UP, LEVEL, I/F
HART Output
Registered host system via non-I.S. HART port.
Bus Address
Each transmitter on a signal loop has an individual bus address. This is defined within the transmitter software
and / or auxiliary configuration environment such as host system & hand held terminal (HHT).
Bus Cabling
The bus cabling is galvanically isolated from the transmitter and the PC plug-in board or the interface adapter.
The screening must be grounded and have electrical continuity throughout. EMC tests indicate the best result
when the grounding at both ends and each transmitter is established. If there is a potential difference in
between the grounds,
measurement must be taken to equalize whilst observing a relevant hazardous area.
Bus Topology
The suitable topologies are:
Serial max. 1000 m
Tree of total length 1000 m.
Whessoematic 550 (WM 550)
Output
The bus is normally connected to Whessoe 1098, RTU 8 or other upper host system via dual channel (can be
single) WM550 current loop.
Termination Resistors
Admissible termination resistance should be calculated as follow.
R = [Va - {n x (Vb + Vc)}] / 0.02
R = terminal resistance in the system
n = number of transmitter in the system
Va = max. available voltage at receiver
