Operation Manual
AIMS-4X Analog to Modbus Combiner-AIMS-8U-PPI-Converter
This brief manual is primarily meant for quick reference to wiring connections and parameter searching.
For more details on operation and application; please log on to www.ppiindia.net
Input Registers (Read-Only Parameters)
| Parameter | MODBUS Address | Values | ||||||||
| Process Value | 1561 to 1564 (4 Channels) 1561 to 1568 (8 Channels) |
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| Alarm-1 Status | 1577 | 
For 4 Channel Version (AIMS-4X), ignore Bit-4 to Bit-15 |
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| Alarm-2 Status | 1578 | |||||||||
| Alarm-3 Status | 1579 | |||||||||
| Alarm-4 Status | 1580 | |||||||||
| Ambient Temperature | 82 | Signed integer values from -30000 to +30000 representing them easured Ambient Temperature through the semi-conductor sensor mounted on the Module. The measured value is always in °C with 0.1 resolution. For example, 30.0°C is represented as 300. |
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Holding Registers (Read / Write Parameters) |
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| Parameter | MODBUS Address |
Settings (Default Value) |
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| Input Type | 83 to 86 (4 Channels) 83 to 90 (8 Channels) | Applicable for Input Type TC / RTD Pt100 / V / mV / m
(Default : 0 to 10 V)
Applicable for Input Type TC / (Default : Type K) |
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| Parameter | MODBUS Address | Settings(Default Value) | ||||||||||||
| Input Type | 83 to 86 (4 Channels) 83 to 90 (8 Channels) | Applicable for Input Type V / mA | ||||||||||||
| Value | Type | |||||||||||||
| 0 | Oto 20 mA | |||||||||||||
| 1 | 4 to 20 mA | |||||||||||||
| 2 | Oto 1.25 V | |||||||||||||
| 3 | Oto 5V | |||||||||||||
| 4 | Oto 10V | |||||||||||||
| 5 | 1 to 5V | |||||||||||||
| (Default : 0 to 10 V) | ||||||||||||||
| Temperature Units | 99 to 102 (4 Channels) 99 to 106 (8 Channels) |
Conditional Parameter (Note | 2) | |||||||||||
| Value | Unit | |||||||||||||
| 0 | °C | |||||||||||||
| 1 | °F | |||||||||||||
| (Default : °C) | ||||||||||||||
| DC Resolution (Note’) |
115 to 118 (4 Channels) 115 to 122 (8 Channels) |
Conditional Parameter No e 2) | ||||||||||||
| Value | Resolution | |||||||||||||
| 0 | 1 | |||||||||||||
| 1 | 0.1 | |||||||||||||
| 2 | 0.01 | |||||||||||||
| 3 | 0.001 | |||||||||||||
| 4 | 0.0001 | |||||||||||||
| (Default : 1 Unit for DC Linear input & 0.1 for Thermocouple & RTD) |
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| Signal Low | 501 to 504 (4 Channels) 501 to 508 (8 Channels) | Conditional Parameter “eV | ||||||||||||
| Input Type | Settings | Default | ||||||||||||
| 0 to 20 mA | 0.00 to Signal High | 0.00 | ||||||||||||
| 4 to 20 mA | 4.00 to Signal High | 4.00 | ||||||||||||
| 0 to 80 mV | 0.00 to Signal High | 0.00 | ||||||||||||
| 0 to 1.25 V | 0.000 to Signal High | 0.000 | ||||||||||||
| 0 to 5 V | 0.000 to Signal High | 0.000 | ||||||||||||
| 0 to 10 V | 0.00 to Signal High | 0.00 | ||||||||||||
| 1 to 5 V | 1.000 to Signal High | 1.000 | ||||||||||||
| Signal High | 517 to 520 (4 Channels) 517 to 524 (8 Channels) | Conditional Parameter (N°Ie 2) | ||||||||||||
| Input Type | Settings | Default | ||||||||||||
| 0 to 20 mA | Signal Low to 20.00 | 20.00 | ||||||||||||
| 4 to 20 mA | Signal Low to 20.00 | 20.00 | ||||||||||||
| 0 to 80 mV | Signal Low to 80.00 | 80.00 | ||||||||||||
| 0 to 1.25 V | Signal Low to 1.250 | 1.250 | ||||||||||||
| 0 to 5 V | Signal Low to 5.000 | 5.000 | ||||||||||||
| 0 to 10 V | Signal Low to 10.00 | 10.00 | ||||||||||||
| 1 to 5 V | Signal Low to 5.000 | 5.000 | ||||||||||||
| Range Low | 131 to 134 (4 Channels)131 to 138 (8 Channels) | (Nolo 2) Conditional Parameter -30000 to 30000 (Default : 0) | ||||||||||||
| Range High | 147 to 150 (4 Channels) 147 to 154 (8 Channels) | (Nolo 2) Conditional Parameter -30000 to 30000 (Default : 1000) | ||||||||||||
| Offset for PV (Note” | 163 to 166 (4 Channels) 163 to 170 (8 Channels) | -30000 to 30000 (Default : 0) | ||||||||||||
| Alarm-1 Type | 179 to 182 (4 Channels) 179 to 186 (8 Channels) | |||||||||||||
| Alarm-2 Type | 243 to 246 (4 Channels) 243 to 250 (8 Channels) | |||||||||||||
| Value | Type | |||||||||||||
| 0 | None | |||||||||||||
| 1 | Process Low | |||||||||||||
| Alarm-3 Type | 307 to 310 (4 Channels) 307 to 314 (8 Channels) | |||||||||||||
| 2 | Process High | |||||||||||||
| (Default : None) | ||||||||||||||
| Alarm-4 Type | 371 to 374 (4 Channels) 371 to 378 (8 Channels) | |||||||||||||
| Parameter | MODBUS Address | Settings (Default Value) | ||||||
| Alarm-1 Set-point (Note “ | 195 to 198 (4 Channels) 195 to 202 (8 Channels) |
Min. to Max. Range specified for the selected Input Type Refer Table 1 (Default : MM or Max Range depending on the Alarm type) |
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| Alarm-2 Set-point (Note “ | 259 to 262 (4 Channels) 259 to 266 (8 Channels) |
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| Alarm-3 Set-point (Note “ | 323 to 326 (4 Channels) 323 to 330 (8 Channels) |
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| Alarm-4 Set-point (Note “ | 387 to 390 (4 Channels) 387 to 394 (8 Channels) |
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| Alarm-1 Hysteresis (Note V | 211 to 214 (4 Channels) 211 to 218 (8 Channels) |
1 to 30000 (Default : 20) | ||||||
| Alarm-2 Hysteresis (Note I) | 275 to 278 (4 Channels) 275 to 282 (8 Channels) |
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| Alarm-3 Hysteresis (Note V | 339 to 342 (4 Channels) 339 to 346 (8 Channels) |
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| Alarm-4 Hysteresis (Note 1) | 403 to 406 (4 Channels) 403 to 410 (8 Channels) |
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| Alarm-1 Inhibit | 227 to 230 (4 Channels) 227 to 234 (8 Channels) |
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| Alarm-2 Inhibit | 291 to 294 (4 Channels) 291 to 298 (8 Channels) |
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| Value | Inhibit | |||||||
| 0 | Disable | |||||||
| Alarm-3 Inhibit | 355 to 358 (4 Channels) 355 to 362 (8 Channels) |
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| 1 | Enable | |||||||
| (Default : Disable) | ||||||||
| Alarm-4 Inhibit | 419 to 422 (4 Channels) 419 to 426 (8 Channels) |
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| Enable Bottom Cliping | 435 to 438 (4 Channels) 435 to 442 (8 Channels) |
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| Value | Enable | |||||||
| 0 | No | |||||||
| 1 | Yes | |||||||
| Default : No) | ||||||||
| Bottom Clip Value | 451 to 454 (4 Channels) 451 to 458 (8 Channels) |
-30000 to 30000 (Default : 0) | ||||||
| Enable Top Cliping | 467 to 470 (4 Channels) 467 to 474 (8 Channels) |
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| Value | Enable | |||||||
| 0 | No | |||||||
| 1 | Yes | |||||||
| Default : No) | ||||||||
| Top Clip Value | 483 to 486 (4 Channels) 483 to 490 (8 Channels) | -30000 to 30000 (Default : 1000) | ||||||
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Configuring Communication Parameters |
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| Parameter | MODBUS Address |
Settings (Default Value) |
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| Modbus Slave ID | 1 | 1 to 247 (Default : 1) | ||||||||||||||||
| Baud Rate | 2 |
(Default : 9600 bps) |
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| Parity | 3 |
(Default : Even) |
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Note 1
Thermocouples (J, K, T, R, S, B, N) and RTD Pt100 (3-wire) Inputs
The process value is always measured in 0.1°C/°F resolution. That is, for example, the value 300 means 30.0°C / °F.
The same should be followed while setting the values for the parameters that are resolution based (like Zero Offset,
Alarm Set-point, Alarm Hysteresis, etc.). That is for example, set 300 counts for 30.0°C / °F.
DC mA / mV / V Inputs
(Also Refer Appendix A : DC Linear Signal Interface)
The measured PV is a Resolution-less Scaled Value derived using the values for the parameters : Signal Low, Signal
High, Range Low and Range High. The parameter ‘DC Resolution’ holds the desired resolution that can be used to insert appropriate Decimal Place in the scaled PV. For example, if the DC Resolution value is 2 (0.01) then the scaled value of 3000 can be read as 30.00.
Similarly the corresponding parameters like Zero Offset, Alarm Set-point, Alarm Hysteresis, etc., are also resolution less and, if desired, the parameter value for ‘DC Resolution’ should be used for appropriate Decimal Place.
Note 2
Conditional Parameters are those whose usage depend upon the values set for some other parameters. For example; the parameters ‘Signal Low’ & ‘Signal High’ for a selected channel are used only if the input type for the selected channel is DC Input (mV / V / mA). The access to the conditional parameters for Read / Write operation, however, is not restricted.
| Input Type | Range (Min. to Max.) | Resolution |
| Type J Thermocouple | 0 to +960.0°C / +32.0 to +1760.0°F | 0.1 °C / °F |
| Type K Thermocouple | -200.0 to +1376.0°C / -328.0 to +2508.0°F | |
| Type T Thermocouple | -200.0 to +387.0°C / -328.0 to +728.0°F | |
| Type R Thermocouple | 0 to +1771.0°C / +32.0 to +3219.0°F | |
| Type S Thermocouple | 0 to +1768.0°C / +32.0 to +3214.0°F | |
| Type B Thermocouple | 0 to +1826.0°C / +32.0 to +3218.0°F | |
| Type N Thermocouple | 0 to +1314.0°C / +32.0 to +2397.0°F | |
| 3-wire, RTD Pt100 | -199.0 to +600.0°C / -328.0 to +1112.0°F | |
| 0 to 20mA DC current | -30000 to 30000 units | 1 0.1 0.01 0.001 0.0001 Units |
| 4 to 20mA DC current | ||
| 0 to 80mV DC voltage | ||
| 0 to 1.25V DC voltage | ||
| 0 to 5.0V DC voltage | ||
| 0 to 10.0V DC voltage | ||
| 1 to 5.0V DC voltage |
CONFIGURING COMMUNICATION
| Switch Position |  |
 |
| Mode Indicator | OFF | ON |
| Operation Mode | Normal | Configuration |
| Communication Parameter Values | User Set values for Module Slave ID, Baud Rate & Parity | Module Slave ID : 1 Baud Rate : 9600 Parity : Even |
OVERALL DIMENSION
| Width (W) : 22.5 mm | Height (H) : 101.0 mm | Depth (D) : 119.0 mm |
ELECTRICAL CONNECTIONS
Note : For 4 Channel Version the connectors for AI-5 to AI-8 are not fitted.
AIMS-4/8X
4 / 8 Channel DIN-Rail Analog Input Modules
MODBUS over RS485 Serial Interface
(Single-Ended & Differential Input Versions)
PPI 101, Diamond Industrial Estate, Navghar,
Vasai Road (E), Dist. Palghar – 401 210.
Sales : 8208199048 / 8208141446
Support : 07498799226 / 08767395333
E: sales@ppiindia.net
support@ppiindia.net
Jan 2022
Documents / Resources
 |
PPI AIMS-4X Analog to Modbus Combiner-AIMS-8U-PPI-Converter [pdf] Instruction Manual AIMS-4X Analog to Modbus Combiner-AIMS-8U-PPI-Converter, AIMS-4X, Analog to Modbus Combiner-AIMS-8U-PPI-Converter, Combiner-AIMS-8U-PPI-Converter, PPI-Converter |
